# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1308

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 1309

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## [Undefined when trying to save gmail attachment](https://discourse.nodered.org/t/undefined-when-trying-to-save-gmail-attachment/8642)

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**Author:** [@NRdiscrs9393](https://discourse.nodered.org/u/NRdiscrs9393)\
**Replies:** 5\
**Last updated:** [5 March 2019 22:34 UTC](https://discourse.nodered.org/t/undefined-when-trying-to-save-gmail-attachment/8642 "2019-03-05T22:34:19Z")

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Hello, The Store Attachment function in the attached flow is not defining the filename while trying to save a gmail attachment. The result of the flow creates filename: "../../mnt/BreachMedia/undefined" and will not sto…

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## [In node-red how can I have a pagination for a table with amount of elements per page](https://discourse.nodered.org/t/in-node-red-how-can-i-have-a-pagination-for-a-table-with-amount-of-elements-per-page/8548)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 7\
**Last updated:** [5 March 2019 17:23 UTC](https://discourse.nodered.org/t/in-node-red-how-can-i-have-a-pagination-for-a-table-with-amount-of-elements-per-page/8548 "2019-03-05T17:23:08Z")

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In node-red I am calling an API and displaying that in a table with sorting but how can I include pagination with amount of elements per page. Below is the code. \<style\> th{ text-align: center; } a { color:#FFFFFF; …

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## [Yeelight rainbow mode](https://discourse.nodered.org/t/yeelight-rainbow-mode/8585)

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**Author:** [@shafirin](https://discourse.nodered.org/u/shafirin)\
**Replies:** 10\
**Last updated:** [5 March 2019 17:16 UTC](https://discourse.nodered.org/t/yeelight-rainbow-mode/8585 "2019-03-05T17:16:39Z")

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Hi guys I bought Yeelight and raspberry pi 3. Im using nodered node , What I want is there somewhere to see how to make rainbow mode and I wish to use but how to? Btw this is my for my final year project. I use https:/…

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## [Terminal command to select newly deployed node-red project?](https://discourse.nodered.org/t/terminal-command-to-select-newly-deployed-node-red-project/8576)

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**Author:** [@rando](https://discourse.nodered.org/u/rando)\
**Replies:** 3\
**Last updated:** [5 March 2019 17:05 UTC](https://discourse.nodered.org/t/terminal-command-to-select-newly-deployed-node-red-project/8576 "2019-03-05T17:05:08Z")

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I've created a .deb package that deploys my node-red project into the correct directory structure. However when I start node-red it uses a default flows file. Is there a command that I can run after deployment that wil…

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## [Posting flows in Node-RED forum](https://discourse.nodered.org/t/posting-flows-in-node-red-forum/8636)

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**Author:** [@chuckf201](https://discourse.nodered.org/u/chuckf201)\
**Replies:** 1\
**Last updated:** [5 March 2019 16:38 UTC](https://discourse.nodered.org/t/posting-flows-in-node-red-forum/8636 "2019-03-05T16:38:14Z")

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Best way to post a flow in forum without streams of text. Would prefer a scroll -able window.

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## [Set intial date for node input with type date](https://discourse.nodered.org/t/set-intial-date-for-node-input-with-type-date/8629)

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**Author:** [@Callmoon](https://discourse.nodered.org/u/Callmoon)\
**Replies:** 1\
**Last updated:** [5 March 2019 13:31 UTC](https://discourse.nodered.org/t/set-intial-date-for-node-input-with-type-date/8629 "2019-03-05T13:31:40Z")

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Hi folks, I try to create my own node which contains a input object with the type of date where this input object has as initial value the date of today (like if you use new Date()). I've already tried something like t…

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## [Three way light switch emulation](https://discourse.nodered.org/t/three-way-light-switch-emulation/8613)

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**Author:** [@kirburator](https://discourse.nodered.org/u/kirburator)\
**Replies:** 5\
**Last updated:** [5 March 2019 13:03 UTC](https://discourse.nodered.org/t/three-way-light-switch-emulation/8613 "2019-03-05T13:03:14Z")

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Is there an easier way to accomplish this? I am trying to create a pseudo three way light switch with two Tasmota switches. LobbyA has the load and LobbyB only sends on/off to LobbyA and back to Dashboard node. This i…

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## [Listen to udp and parse the snmp in it](https://discourse.nodered.org/t/listen-to-udp-and-parse-the-snmp-in-it/8481)

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**Author:** [@Albin](https://discourse.nodered.org/u/Albin)\
**Replies:** 16\
**Last updated:** [5 March 2019 09:37 UTC](https://discourse.nodered.org/t/listen-to-udp-and-parse-the-snmp-in-it/8481 "2019-03-05T09:37:51Z")

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Hello guys, New to Node-red. I have a use case to 'Keep running a node to listen to UDP msgs and parse the snmp data in it and then it needs to be forwarded to kafka. Has anyone done something similar. Could you plea…

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## [Can't post XML content with httprequest node](https://discourse.nodered.org/t/cant-post-xml-content-with-httprequest-node/8597)

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**Author:** [@jycemea](https://discourse.nodered.org/u/jycemea)\
**Replies:** 2\
**Last updated:** [5 March 2019 06:50 UTC](https://discourse.nodered.org/t/cant-post-xml-content-with-httprequest-node/8597 "2019-03-05T06:50:33Z")

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Hi, I got my nodes running fine but impossible to post the XML content, no answer ... the end point is correctly setup. Nothing happen in a console... like it was never sent!!! Can someone verify my Format POST functio…

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## [Question: How to get and set the URL when outputting Watson Assistant's response image and option in Node-RED](https://discourse.nodered.org/t/question-how-to-get-and-set-the-url-when-outputting-watson-assistants-response-image-and-option-in-node-red/8428)

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**Author:** [@az-toFu](https://discourse.nodered.org/u/az-toFu)\
**Replies:** 5\
**Last updated:** [5 March 2019 03:21 UTC](https://discourse.nodered.org/t/question-how-to-get-and-set-the-url-when-outputting-watson-assistants-response-image-and-option-in-node-red/8428 "2019-03-05T03:21:07Z")

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I want to make web chatbot using Watson Assistant Watson Assistant's Try it works normally For flows created with Node-RED, text only exchanges are normally done I can not understand how to set response type option a…

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## [IBM Continuous Delivery - repository is empty](https://discourse.nodered.org/t/ibm-continuous-delivery-repository-is-empty/8619)

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**Author:** [@VictorStela](https://discourse.nodered.org/u/VictorStela)\
**Replies:** 0\
**Last updated:** [5 March 2019 00:41 UTC](https://discourse.nodered.org/t/ibm-continuous-delivery-repository-is-empty/8619 "2019-03-05T00:41:52Z")

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Hello, I'm trying to use the continuous delivery tool of IBM to access the internal archives of node-red to can use the 'ui builder' node, but when I active the tool, the git repository is empty. Can somebody help me? …

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## [Is there a way to locate all instances of a subflow?](https://discourse.nodered.org/t/is-there-a-way-to-locate-all-instances-of-a-subflow/8616)

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**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 2\
**Last updated:** [4 March 2019 23:03 UTC](https://discourse.nodered.org/t/is-there-a-way-to-locate-all-instances-of-a-subflow/8616 "2019-03-04T23:03:36Z")

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I recently confused myself while experimenting with subflows. At one point the Properties tab of the flow template editor reported many more instances of a subflow than I thought I had created. I eventually solved the pr…

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## [Display pi sensor data to i2c lcd](https://discourse.nodered.org/t/display-pi-sensor-data-to-i2c-lcd/8571)

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**Author:** [@Frankjt](https://discourse.nodered.org/u/Frankjt)\
**Replies:** 5\
**Last updated:** [4 March 2019 21:03 UTC](https://discourse.nodered.org/t/display-pi-sensor-data-to-i2c-lcd/8571 "2019-03-04T21:03:32Z")

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Hi all, Sorry, for such a noob question, but I’m really stuck here. I have very little (no) programming experience prior to discovering node red last year. I’ve successfully created a few projects, the biggest control…

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## [Serial data from arduino](https://discourse.nodered.org/t/serial-data-from-arduino/8602)

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**Author:** [@mani2411](https://discourse.nodered.org/u/mani2411)\
**Replies:** 3\
**Last updated:** [4 March 2019 17:45 UTC](https://discourse.nodered.org/t/serial-data-from-arduino/8602 "2019-03-04T17:45:10Z")

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hi all i interfaced arduino with raspberry pi and getting serial data on node red from serial node but i want to print sensor data on dashboard gauge My msg.payload is giving "distance:xx" i am using ultrasonic sensor…

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## [ToneAnalyzer: "Missing a minor version parameter in the URL."](https://discourse.nodered.org/t/toneanalyzer-missing-a-minor-version-parameter-in-the-url/8540)

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**Author:** [@nhar](https://discourse.nodered.org/u/nhar)\
**Replies:** 4\
**Last updated:** [4 March 2019 16:00 UTC](https://discourse.nodered.org/t/toneanalyzer-missing-a-minor-version-parameter-in-the-url/8540 "2019-03-04T16:00:36Z")

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Hi, I'm new to nodered. I have a basic toneanalyzer set up with a inject \> toneanalyzer \> reponse path. I've just set up a connection between my ToneAnalyzer and my nodered instance. When I try to inject the string, I …

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## [Pie in the Sky idea - is it possible to package a NodeRED flow for standalone use?](https://discourse.nodered.org/t/pie-in-the-sky-idea-is-it-possible-to-package-a-nodered-flow-for-standalone-use/8595)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 2\
**Last updated:** [4 March 2019 14:57 UTC](https://discourse.nodered.org/t/pie-in-the-sky-idea-is-it-possible-to-package-a-nodered-flow-for-standalone-use/8595 "2019-03-04T14:57:32Z")

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i.e. code up flow as normal - then run a compiler that converts whole flow/node.js/npm stuff into standalone executable (in my use case - to run on Win10) ??? Simon

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## [How to remove : in mac address?](https://discourse.nodered.org/t/how-to-remove-in-mac-address/8593)

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**Author:** [@jycemea](https://discourse.nodered.org/u/jycemea)\
**Replies:** 2\
**Last updated:** [4 March 2019 13:36 UTC](https://discourse.nodered.org/t/how-to-remove-in-mac-address/8593 "2019-03-04T13:36:01Z")

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Hi all, how to remove : from the mac: baseElements\[1\] result , as below : 58:6D:8F:49:42:4E =\> 586D8F49424E in the following code : let i; let wifiAccessPointsStrings = elements\[5\].split("&") let j; let ap = \[\]; for …

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## [Whats wrong with my " for loop" and array selection](https://discourse.nodered.org/t/whats-wrong-with-my-for-loop-and-array-selection/8570)

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**Author:** [@BastelKlaus](https://discourse.nodered.org/u/BastelKlaus)\
**Replies:** 7\
**Last updated:** [4 March 2019 12:40 UTC](https://discourse.nodered.org/t/whats-wrong-with-my-for-loop-and-array-selection/8570 "2019-03-04T12:40:09Z")

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Hi i need to send several requests to my heater, end i will sort his answer to the right output. like: The heater can handel max 4-5 requests in 1 Buffer, so i have to split the requests. In my function i try to se…

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## [Run nodes with root privileges](https://discourse.nodered.org/t/run-nodes-with-root-privileges/8575)

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**Author:** [@pictux](https://discourse.nodered.org/u/pictux)\
**Replies:** 11\
**Last updated:** [4 March 2019 12:35 UTC](https://discourse.nodered.org/t/run-nodes-with-root-privileges/8575 "2019-03-04T12:35:29Z")

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Hi everybody! There are nodes requiring root privileges in order to run (i.e. amazondash, sonoff server, ..). Is there a way to run those specific nodes in a "sudo" way? Thanks! Cheers

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## [Disabled flow: how to "disable" also nodes within it](https://discourse.nodered.org/t/disabled-flow-how-to-disable-also-nodes-within-it/8574)

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**Author:** [@pictux](https://discourse.nodered.org/u/pictux)\
**Replies:** 7\
**Last updated:** [4 March 2019 11:48 UTC](https://discourse.nodered.org/t/disabled-flow-how-to-disable-also-nodes-within-it/8574 "2019-03-04T11:48:04Z")

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Hi guys, i have a local nodered instance used to test some nodes / flows before to move to the final hw. After the release, i usually keep those flows - disabled. But I see that the nodes within those flows are still r…

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## [Calculate energy per heating session](https://discourse.nodered.org/t/calculate-energy-per-heating-session/8537)

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**Author:** [@SaiQmon](https://discourse.nodered.org/u/SaiQmon)\
**Replies:** 4\
**Last updated:** [3 March 2019 20:01 UTC](https://discourse.nodered.org/t/calculate-energy-per-heating-session/8537 "2019-03-03T20:01:08Z")

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Hi! I have boiler which is heated up by burning logs. I've just installed heat meter which I can read by RS-232, or actually meter transmits data periodically to Node-Red, such as current heating power (kW), inlet and o…

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## [Nothing happens for click](https://discourse.nodered.org/t/nothing-happens-for-click/8494)

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**Author:** [@hebergeweb](https://discourse.nodered.org/u/hebergeweb)\
**Replies:** 21\
**Last updated:** [4 March 2019 08:41 UTC](https://discourse.nodered.org/t/nothing-happens-for-click/8494 "2019-03-04T08:41:15Z")

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I can not change the size of node, same problem if i click on the + element button Nothing happens

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## [Json to influx problem](https://discourse.nodered.org/t/json-to-influx-problem/8581)

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**Author:** [@cismarine](https://discourse.nodered.org/u/cismarine)\
**Replies:** 2\
**Last updated:** [4 March 2019 08:24 UTC](https://discourse.nodered.org/t/json-to-influx-problem/8581 "2019-03-04T08:24:56Z")

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hi, I am pushing the following data to influxdb and not getting any values stored: {"data":{"voltage":2995,"temperature":23.22,"humidity":41.34,"pressure":964.2,"batteryLevel":80}} what can be the problem? TIA Bart

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## [Share Variables across multiple RPi](https://discourse.nodered.org/t/share-variables-across-multiple-rpi/8538)

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**Author:** [@tsdasd](https://discourse.nodered.org/u/tsdasd)\
**Replies:** 6\
**Last updated:** [3 March 2019 20:51 UTC](https://discourse.nodered.org/t/share-variables-across-multiple-rpi/8538 "2019-03-03T20:51:50Z")

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What would be your ideal approach to share global variables across multiple RPi's each with one node-red instance? Would you take the approach of a MySQL database where you could write / read the variables?

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## [Node red with raspberry pi using dht](https://discourse.nodered.org/t/node-red-with-raspberry-pi-using-dht/8563)

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**Author:** [@mani2411](https://discourse.nodered.org/u/mani2411)\
**Replies:** 1\
**Last updated:** [3 March 2019 18:47 UTC](https://discourse.nodered.org/t/node-red-with-raspberry-pi-using-dht/8563 "2019-03-03T18:47:27Z")

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Hi all, i linked arduino with raspberry pi and done some analog and digital controls over node red using standard firmata now i want to interface dht11 sensor with arduino and get data over node red please help me Than…

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## [Custom Node with long drop down](https://discourse.nodered.org/t/custom-node-with-long-drop-down/8452)

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**Author:** [@bertmartin](https://discourse.nodered.org/u/bertmartin)\
**Replies:** 2\
**Last updated:** [3 March 2019 16:48 UTC](https://discourse.nodered.org/t/custom-node-with-long-drop-down/8452 "2019-03-03T16:48:22Z")

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I am working on a custom node that the configuration has a drop down list that is dynamically created. My issue is that the list has gotten very long and doesn’t have a way to scroll up and down - once it hits a certain…

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## [Temperature is not stable - Multisensor ZW100](https://discourse.nodered.org/t/temperature-is-not-stable-multisensor-zw100/8347)

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**Author:** [@florent](https://discourse.nodered.org/u/florent)\
**Replies:** 5\
**Last updated:** [3 March 2019 16:39 UTC](https://discourse.nodered.org/t/temperature-is-not-stable-multisensor-zw100/8347 "2019-03-03T16:39:42Z")

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Hello, My temperature with my multisensor is not regular. By default it is in farenheit and I try to convert it in celsius. But, one time it give me a temperature in farenheit (so, in this case it's ok and I can conv…

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## [Does the context.global.set affect array somehow?](https://discourse.nodered.org/t/does-the-context-global-set-affect-array-somehow/8514)

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**Author:** [@Petr](https://discourse.nodered.org/u/Petr)\
**Replies:** 14\
**Last updated:** [3 March 2019 15:50 UTC](https://discourse.nodered.org/t/does-the-context-global-set-affect-array-somehow/8514 "2019-03-03T15:50:22Z")

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Does the "context.global.set" affect array somehow or it is just my low knowledge of js syntax? When I declare the var dataSet using the array (first uncommented line below), my table works. When I uncomment the line …

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## [Problem with parse a string to DateTime](https://discourse.nodered.org/t/problem-with-parse-a-string-to-datetime/8556)

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**Author:** [@howl](https://discourse.nodered.org/u/howl)\
**Replies:** 5\
**Last updated:** [3 March 2019 15:33 UTC](https://discourse.nodered.org/t/problem-with-parse-a-string-to-datetime/8556 "2019-03-03T15:33:17Z")

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Hello, from an application I get the date in the format "20111230T213000Z", how can I convert it in a function to a DateTime object to calculate with it etc.? var d = new Date('20111230T213000Z') does not work. Holger …

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## [Personalize Telegram message with entity\_id name](https://discourse.nodered.org/t/personalize-telegram-message-with-entity-id-name/8453)

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**Author:** [@msanchezt](https://discourse.nodered.org/u/msanchezt)\
**Replies:** 7\
**Last updated:** [3 March 2019 15:28 UTC](https://discourse.nodered.org/t/personalize-telegram-message-with-entity-id-name/8453 "2019-03-03T15:28:17Z")

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Hi, I'm using Home Assistant in conjunction with NodeRed. I have the following automation in place that sends a Telegram alert every time opens a blind (I have 4 blinds in the living room). The The problem is don't kno…

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