# Latest

**URL:** https://discourse.nodered.org/latest.md?page=546

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

**Page:** 547

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## [Barcode scanner trigger a flow](https://discourse.nodered.org/t/barcode-scanner-trigger-a-flow/64327)

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**Author:** [@tgottie](https://discourse.nodered.org/u/tgottie)\
**Replies:** 7\
**Last updated:** [24 June 2022 18:09 UTC](https://discourse.nodered.org/t/barcode-scanner-trigger-a-flow/64327 "2022-06-24T18:09:00Z")

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alright, so this is what i have got together so far, i am using a datalogic powerscan m8300 connected by usb using a raspberry pi4. what i would like to do is scan an item and start the flow like an inject node. i have t…

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## [Generate a PDF-file with variable filename](https://discourse.nodered.org/t/generate-a-pdf-file-with-variable-filename/64228)

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**Author:** [@Mauri](https://discourse.nodered.org/u/Mauri)\
**Replies:** 5\
**Last updated:** [24 June 2022 17:58 UTC](https://discourse.nodered.org/t/generate-a-pdf-file-with-variable-filename/64228 "2022-06-24T17:58:18Z")

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Hello Community I want to generate a pdf in node red and want to enter the file name (and maybe the location) with variables. I heard that this could work with the msg.filename, but I couldn't find anything. can someone…

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## [Saving table - how-to and complications with dataChanged](https://discourse.nodered.org/t/saving-table-how-to-and-complications-with-datachanged/64313)

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**Author:** [@stdave](https://discourse.nodered.org/u/stdave)\
**Replies:** 1\
**Last updated:** [24 June 2022 15:47 UTC](https://discourse.nodered.org/t/saving-table-how-to-and-complications-with-datachanged/64313 "2022-06-24T15:47:04Z")

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I have been searching for ways that I can save a table - JSON, CSV whatever. I have a process to save it which seems to work - however - the problem is that the screen edit of the table does not jive with the internal …

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## [Programmatically disconnect from MQTT](https://discourse.nodered.org/t/programmatically-disconnect-from-mqtt/64286)

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**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 8\
**Last updated:** [24 June 2022 10:58 UTC](https://discourse.nodered.org/t/programmatically-disconnect-from-mqtt/64286 "2022-06-24T10:58:14Z")

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Hey, I want to retrieve info from zgibee2mqtt that I can only seem to retrieve on the initial MQTT connection, namely the stored state of each device. Each time I want this data I could just restart all my flows, howev…

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## [Ui\_table with dropdown column](https://discourse.nodered.org/t/ui-table-with-dropdown-column/64323)

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**Author:** [@aitor](https://discourse.nodered.org/u/aitor)\
**Replies:** 0\
**Last updated:** [24 June 2022 10:17 UTC](https://discourse.nodered.org/t/ui-table-with-dropdown-column/64323 "2022-06-24T10:17:21Z")

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Hi there, I am trying to set a "dropdown" column following tabulator's documentation example (Tabulator) but I'm not able to successfully achieve it. Making some tests I managed to make the column editable but just for …

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## [Uibuilder vue3 example: TypeError: Class extends value undefined is not a constructor or null](https://discourse.nodered.org/t/uibuilder-vue3-example-typeerror-class-extends-value-undefined-is-not-a-constructor-or-null/64264)

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**Author:** [@skipware](https://discourse.nodered.org/u/skipware)\
**Replies:** 8\
**Last updated:** [24 June 2022 08:16 UTC](https://discourse.nodered.org/t/uibuilder-vue3-example-typeerror-class-extends-value-undefined-is-not-a-constructor-or-null/64264 "2022-06-24T08:16:18Z")

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I followed the instructions here: \[Basic Vite Vue 3 TypeScript App · TotallyInformation/node-red-contrib-uibuilder Wiki · GitHub\](https://Basic Vite Vue 3 TypeScript App) After going through the build phase successfull…

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## [Mute node on debug screen](https://discourse.nodered.org/t/mute-node-on-debug-screen/64309)

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**Author:** [@subwayfootlong](https://discourse.nodered.org/u/subwayfootlong)\
**Replies:** 1\
**Last updated:** [24 June 2022 07:26 UTC](https://discourse.nodered.org/t/mute-node-on-debug-screen/64309 "2022-06-24T07:26:44Z")

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Hello all, I am using the OPCUA Node to subscribe to multiple nodeIds and upon a good read, it will output: CytroPac: StatusCode: Good (0x00000000) Usually this would be ok with the debug filter however, it is also c…

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## [How to pass used\_id to Watson-AssistantV2 node?](https://discourse.nodered.org/t/how-to-pass-used-id-to-watson-assistantv2-node/64312)

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**Author:** [@fedepoe](https://discourse.nodered.org/u/fedepoe)\
**Replies:** 0\
**Last updated:** [24 June 2022 02:05 UTC](https://discourse.nodered.org/t/how-to-pass-used-id-to-watson-assistantv2-node/64312 "2022-06-24T02:05:46Z")

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Hi! I have been trying to send the user\_id to the Watson Assistant V2 node in different ways but I could not find anyone that worked. I tried: msg.user\_id msg.params.user\_id msg.params.context.user\_id msg.params.con…

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## [Reference error: msg is not defined](https://discourse.nodered.org/t/reference-error-msg-is-not-defined/64299)

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**Author:** [@omardmf](https://discourse.nodered.org/u/omardmf)\
**Replies:** 4\
**Last updated:** [24 June 2022 00:05 UTC](https://discourse.nodered.org/t/reference-error-msg-is-not-defined/64299 "2022-06-24T00:05:22Z")

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i'm using mqtt to send and recieve messages on node red. i'm receiving "Red" or "Green" messages and import them to an on start function. var Color = msg.payload if (Color === "Red") { return msg; } else if (Color …

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## [Eaton E4 com API Key](https://discourse.nodered.org/t/eaton-e4-com-api-key/64305)

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**Author:** [@Dan1](https://discourse.nodered.org/u/Dan1)\
**Replies:** 0\
**Last updated:** [23 June 2022 22:34 UTC](https://discourse.nodered.org/t/eaton-e4-com-api-key/64305 "2022-06-23T22:34:10Z")

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I am attempting to use the eaton E4 and did manage to create a functional dashboard where I could plot data and now can't get it to work. I guess that my problem is the API KEY is wrong. How do I solve this issue? Than…

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## [Please help with Xero webhook to Node Red](https://discourse.nodered.org/t/please-help-with-xero-webhook-to-node-red/64234)

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**Author:** [@stathisaska](https://discourse.nodered.org/u/stathisaska)\
**Replies:** 12\
**Last updated:** [23 June 2022 22:08 UTC](https://discourse.nodered.org/t/please-help-with-xero-webhook-to-node-red/64234 "2022-06-23T22:08:15Z")

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I have been dealing with cryptography craziness since yesterday, I 've literally lost my sleep over this. I am implementing a node red solution to get webhooks from Xero to be written in a custom app. I have experienced…

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## [I need to get the RAW body from a listener node](https://discourse.nodered.org/t/i-need-to-get-the-raw-body-from-a-listener-node/3105)

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**Author:** [@stefanopog](https://discourse.nodered.org/u/stefanopog)\
**Replies:** 38\
**Last updated:** [23 June 2022 22:04 UTC](https://discourse.nodered.org/t/i-need-to-get-the-raw-body-from-a-listener-node/3105 "2022-06-23T22:04:21Z")

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Hello I am developping a node as part of a package. The node is a WebHook (much like what you can imagine exist in SLACK... so, the user subscribes to events and the target app will deliver those events as POST to the …

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## [Drawing a chart in node red dashboard using csv file](https://discourse.nodered.org/t/drawing-a-chart-in-node-red-dashboard-using-csv-file/64291)

<div class="topic-metadata">

**Author:** [@OmarShazlyXX](https://discourse.nodered.org/u/OmarShazlyXX)\
**Replies:** 4\
**Last updated:** [23 June 2022 18:44 UTC](https://discourse.nodered.org/t/drawing-a-chart-in-node-red-dashboard-using-csv-file/64291 "2022-06-23T18:44:20Z")

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I'm trying to display a line chart in the dashboard from a csv file, this chart shows the change of the compressor's power(y-axis) with time(x-axis), i saw some videos showing that i must convert the time to unix format …

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## [How to set and use variables in node property panels](https://discourse.nodered.org/t/how-to-set-and-use-variables-in-node-property-panels/64297)

<div class="topic-metadata">

**Author:** [@Wilay](https://discourse.nodered.org/u/Wilay)\
**Replies:** 0\
**Last updated:** [23 June 2022 17:17 UTC](https://discourse.nodered.org/t/how-to-set-and-use-variables-in-node-property-panels/64297 "2022-06-23T17:17:53Z")

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I am trying to make a system that is flexible depending on the input that a Google Sheets node (node-red-contrib-google-sheets) receives. I'd like to, depending on the input received, change the targeted Sheet/Tab in my …

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## [Group Name using an environment variable](https://discourse.nodered.org/t/group-name-using-an-environment-variable/64253)

<div class="topic-metadata">

**Author:** [@mojgithub](https://discourse.nodered.org/u/mojgithub)\
**Replies:** 3\
**Last updated:** [23 June 2022 15:40 UTC](https://discourse.nodered.org/t/group-name-using-an-environment-variable/64253 "2022-06-23T15:40:16Z")

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HI Does Group Name supports an environment variable? If Yes.. how can i use it? My code doesnt work.

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## [How do I add user defined logs in log file](https://discourse.nodered.org/t/how-do-i-add-user-defined-logs-in-log-file/64242)

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**Author:** [@MiliH](https://discourse.nodered.org/u/MiliH)\
**Replies:** 11\
**Last updated:** [23 June 2022 14:54 UTC](https://discourse.nodered.org/t/how-do-i-add-user-defined-logs-in-log-file/64242 "2022-06-23T14:54:30Z")

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Hello, I want to add logs to log file in Node-RED to check whether workflow is working properly. Can anyone help me out how to add logs. Thank you!

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## [Send data from node red to an automaton via a web service](https://discourse.nodered.org/t/send-data-from-node-red-to-an-automaton-via-a-web-service/64287)

<div class="topic-metadata">

**Author:** [@samirovic](https://discourse.nodered.org/u/samirovic)\
**Replies:** 0\
**Last updated:** [23 June 2022 14:17 UTC](https://discourse.nodered.org/t/send-data-from-node-red-to-an-automaton-via-a-web-service/64287 "2022-06-23T14:17:06Z")

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the objective is to send data from node red to an PLC via a web service. here are the web services that I can use to retrieve this data. do you have any idea how i can do this?

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## [Retrieve HTTP POST cUrl data on node-red](https://discourse.nodered.org/t/retrieve-http-post-curl-data-on-node-red/64266)

<div class="topic-metadata">

**Author:** [@samirovic](https://discourse.nodered.org/u/samirovic)\
**Replies:** 16\
**Last updated:** [23 June 2022 13:31 UTC](https://discourse.nodered.org/t/retrieve-http-post-curl-data-on-node-red/64266 "2022-06-23T13:31:49Z")

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Hello, I am new to node-red. I would like to know how I can recover HTTP Post Curl data on node red. I leave you the example: curl -H "Content-Type:application/x-www-form-urlencoded" -c ./cookie.txt -X POST --data '{"i…

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## [Dashboard - Template node to End Node](https://discourse.nodered.org/t/dashboard-template-node-to-end-node/64278)

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**Author:** [@Nilpferd](https://discourse.nodered.org/u/Nilpferd)\
**Replies:** 1\
**Last updated:** [23 June 2022 12:35 UTC](https://discourse.nodered.org/t/dashboard-template-node-to-end-node/64278 "2022-06-23T12:35:38Z")

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I would like to have the text in on line in both nodes (template & text node) the template node content: How to adjust the lines?

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## [Ui topbar button](https://discourse.nodered.org/t/ui-topbar-button/64279)

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**Author:** [@node-to](https://discourse.nodered.org/u/node-to)\
**Replies:** 0\
**Last updated:** [23 June 2022 11:12 UTC](https://discourse.nodered.org/t/ui-topbar-button/64279 "2022-06-23T11:12:02Z")

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I was trying to create ui top bar button but when ever I toggle the tab in is repeat after is use no-repeat function. can any one help,

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## [Parse data from AHT1X-0x38](https://discourse.nodered.org/t/parse-data-from-aht1x-0x38/64275)

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**Author:** [@ferdoo](https://discourse.nodered.org/u/ferdoo)\
**Replies:** 4\
**Last updated:** [23 June 2022 10:41 UTC](https://discourse.nodered.org/t/parse-data-from-aht1x-0x38/64275 "2022-06-23T10:41:51Z")

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Hi can please someone help my parse data from AHT1X-0x38. Message is: { "topic": "tele/tasmota\_E9B332/SENSOR", "payload": "{\\"Time\\":\\"2022-06-23T10:08:05\\",\\"AHT1X-0x38\\":{\\"Temperature\\":27.2,\\"Humidity\\":47.7,\\"Dew…

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## [Install Oracle client on existing nodered container](https://discourse.nodered.org/t/install-oracle-client-on-existing-nodered-container/64269)

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**Author:** [@sys4cad1](https://discourse.nodered.org/u/sys4cad1)\
**Replies:** 1\
**Last updated:** [23 June 2022 10:29 UTC](https://discourse.nodered.org/t/install-oracle-client-on-existing-nodered-container/64269 "2022-06-23T10:29:16Z")

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As I spent few days to sort out oracle connection with exsting nodered container, I'd like to share how I solved the problem as following. download oracle client zip file: ( in my case target oracle version is 11g ) …

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## [How to divide two variables defined in 2 functions](https://discourse.nodered.org/t/how-to-divide-two-variables-defined-in-2-functions/64036)

<div class="topic-metadata">

**Author:** [@Bruno1](https://discourse.nodered.org/u/Bruno1)\
**Replies:** 3\
**Last updated:** [23 June 2022 08:49 UTC](https://discourse.nodered.org/t/how-to-divide-two-variables-defined-in-2-functions/64036 "2022-06-23T08:49:22Z")

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Hi everyone! In this case i cant´t calculate the division of two variables defined in diferent functions. I want that my output will be a numeric (x/y). How to resolve this problem? In the first function (top left) …

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## [Localhost:1880 not loading](https://discourse.nodered.org/t/localhost-1880-not-loading/64241)

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**Author:** [@Jerre](https://discourse.nodered.org/u/Jerre)\
**Replies:** 5\
**Last updated:** [23 June 2022 05:57 UTC](https://discourse.nodered.org/t/localhost-1880-not-loading/64241 "2022-06-23T05:57:08Z")

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Hello, I installed Node-red on a virtual Windows-10 machine (Vm-ware) After my coffee break my node red stoped working. (Disconnected) I restarted my VM ware and started Node-red Then I openend my webbrowser and t…

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## [Node-red on docker-compose with Kong gateway](https://discourse.nodered.org/t/node-red-on-docker-compose-with-kong-gateway/63417)

<div class="topic-metadata">

**Author:** [@n2048](https://discourse.nodered.org/u/n2048)\
**Replies:** 3\
**Last updated:** [22 June 2022 23:07 UTC](https://discourse.nodered.org/t/node-red-on-docker-compose-with-kong-gateway/63417 "2022-06-22T23:07:48Z")

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I have aa docker-composes environment wheree all the services are routed and protected through a KONG gateway. I recently added aa node-red service to the infrastructure but I can't seem to make it fully work. The inte…

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## [🎉 Node-RED 3.0.0-beta.3 released](https://discourse.nodered.org/t/node-red-3-0-0-beta-3-released/64027)

<div class="topic-metadata">

**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 60\
**Last updated:** [22 June 2022 19:20 UTC](https://discourse.nodered.org/t/node-red-3-0-0-beta-3-released/64027 "2022-06-22T19:20:51Z")

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:tada: The third and final beta release of Node-RED 3.0 is now available. Node-RED 3.x requires at least Node 14.x or later. We recommend the current Active LTS release, Node 16.x. This release brings some fixes and im…

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## [Same dashboard/NR instance view but on two different devices? Get out of sync?](https://discourse.nodered.org/t/same-dashboard-nr-instance-view-but-on-two-different-devices-get-out-of-sync/64251)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 2\
**Last updated:** [22 June 2022 18:58 UTC](https://discourse.nodered.org/t/same-dashboard-nr-instance-view-but-on-two-different-devices-get-out-of-sync/64251 "2022-06-22T18:58:29Z")

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Came across an interesting issue today... my touch screen view of NR, being faster than my phone, I noticed that changes to one device where not timely to the later. My phone is much slower at times. I know the basic d…

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## [Force ui\_chart to use UTC not current locale?](https://discourse.nodered.org/t/force-ui-chart-to-use-utc-not-current-locale/64124)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 8\
**Last updated:** [22 June 2022 18:25 UTC](https://discourse.nodered.org/t/force-ui-chart-to-use-utc-not-current-locale/64124 "2022-06-22T18:25:17Z")

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Force ui\_chart to use UTC not current locale? Even though the system is using UTC, and I have am sourcing timestamp from new Date() timezone UTC, ui\_chart is still showing time in local context. For example, UTC may…

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## [Mongodb3 node : how to pass information from function node](https://discourse.nodered.org/t/mongodb3-node-how-to-pass-information-from-function-node/64197)

<div class="topic-metadata">

**Author:** [@bertaud](https://discourse.nodered.org/u/bertaud)\
**Replies:** 9\
**Last updated:** [22 June 2022 18:20 UTC](https://discourse.nodered.org/t/mongodb3-node-how-to-pass-information-from-function-node/64197 "2022-06-22T18:20:29Z")

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i want to pass information in function node to a mongo node especially the server information (URI). What is the syntax to use in function node ? i try following code but doesn't works var URI= "mongodb://"+ mongo\_User…

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## [Nodered flows.json comparator](https://discourse.nodered.org/t/nodered-flows-json-comparator/64208)

<div class="topic-metadata">

**Author:** [@KarolisL](https://discourse.nodered.org/u/KarolisL)\
**Replies:** 4\
**Last updated:** [22 June 2022 18:09 UTC](https://discourse.nodered.org/t/nodered-flows-json-comparator/64208 "2022-06-22T18:09:37Z")

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Is there a way to compare flows.json by removing "x": and "y": coordinates? Nodes might be moved in development and it generates unnecessary differences in comparator. Right now I bookmark the lines with and then re…

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