# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1119

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

**Page:** 1120

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## [Serial node doeasnt connect](https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587)

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**Author:** [@sepehr](https://discourse.nodered.org/u/sepehr)\
**Replies:** 0\
**Last updated:** [10 April 2020 12:17 UTC](https://discourse.nodered.org/t/serial-node-doeasnt-connect/24587 "2020-04-10T12:17:37Z")

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I'm using node-red with windows. I want to connect node-red to my Arduino with serial node. In my Arduino I connect HC-SR04 sensor to measure distance and I want to monitor distance in node-red. I managed node settings l…

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## [Button colour settings - need help](https://discourse.nodered.org/t/button-colour-settings-need-help/24584)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 7\
**Last updated:** [10 April 2020 11:55 UTC](https://discourse.nodered.org/t/button-colour-settings-need-help/24584 "2020-04-10T11:55:25Z")

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(Dashboard? Not really sure, but....) This button works, but I want to change the colours. \[{"id":"271d3520.9bb862","type":"ui\_template","z":"e0bd2889.28018","group":"42382e93.83c508","name":"","order":6,"width":"2",…

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## [Can I generate a custom node using code inside ui\_template](https://discourse.nodered.org/t/can-i-generate-a-custom-node-using-code-inside-ui-template/24528)

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**Author:** [@josekavunkal](https://discourse.nodered.org/u/josekavunkal)\
**Replies:** 3\
**Last updated:** [10 April 2020 11:16 UTC](https://discourse.nodered.org/t/can-i-generate-a-custom-node-using-code-inside-ui-template/24528 "2020-04-10T11:16:39Z")

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I have created a custom UI using ui\_template and some graph code . But I need this as a custom node under dashboard category. I know that node-red-nodegen needs function code . Is there a way to generate custom node f…

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## [Find my iphone node not working](https://discourse.nodered.org/t/find-my-iphone-node-not-working/24475)

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**Author:** [@demokedes](https://discourse.nodered.org/u/demokedes)\
**Replies:** 10\
**Last updated:** [10 April 2020 11:03 UTC](https://discourse.nodered.org/t/find-my-iphone-node-not-working/24475 "2020-04-10T11:03:56Z")

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Dear all, I have an idea to track all location I visited. I founf find my iphone node ( which is working exactly that by utilising icloud. I created flow shown in the bellow diagram, bot somehow it is not working. The…

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## [Best practices for presence detection](https://discourse.nodered.org/t/best-practices-for-presence-detection/24575)

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**Author:** [@Edo78](https://discourse.nodered.org/u/Edo78)\
**Replies:** 3\
**Last updated:** [10 April 2020 10:31 UTC](https://discourse.nodered.org/t/best-practices-for-presence-detection/24575 "2020-04-10T10:31:47Z")

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Hi, I'm trying to figure out how to manage a pretty classic presence detection management. I have multiple devices that can be detected near a light. If only one of them is close then I have to turn on the light but I …

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## [Flow deploy from dashBoard](https://discourse.nodered.org/t/flow-deploy-from-dashboard/24574)

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**Author:** [@billard\_fm](https://discourse.nodered.org/u/billard_fm)\
**Replies:** 0\
**Last updated:** [10 April 2020 08:46 UTC](https://discourse.nodered.org/t/flow-deploy-from-dashboard/24574 "2020-04-10T08:46:39Z")

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Hello, i would know if it's possible to deploy a flow with a click on a button on the dashboard. I would't make it, because first i try these actions modify the file flow.json with a script launch with a click on a d…

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## [Alexa-smart-home-v3 acknowledge problem?](https://discourse.nodered.org/t/alexa-smart-home-v3-acknowledge-problem/24568)

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**Author:** [@pgScorpio](https://discourse.nodered.org/u/pgScorpio)\
**Replies:** 0\
**Last updated:** [10 April 2020 06:53 UTC](https://discourse.nodered.org/t/alexa-smart-home-v3-acknowledge-problem/24568 "2020-04-10T06:53:08Z")

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Hi all, I'm using several alexa-smart-home-v3 nodes to control several lights, tv etc. from google home. All work fine, but I get "could not reach" messages from google assistant when addressing more than 2 alexa-smart…

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## [🎉 Node-RED 1.0.5 released](https://discourse.nodered.org/t/node-red-1-0-5-released/24522)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 3\
**Last updated:** [10 April 2020 06:30 UTC](https://discourse.nodered.org/t/node-red-1-0-5-released/24522 "2020-04-10T06:30:05Z")

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Node-RED 1.0.5 has been released with the usual small collection of fixes across the board. Full details here: https://github.com/node-red/node-red/releases/tag/1.0.5

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## [Can't load Node-Red along side Hoobs 3 on a Pi4](https://discourse.nodered.org/t/cant-load-node-red-along-side-hoobs-3-on-a-pi4/24565)

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**Author:** [@dscott](https://discourse.nodered.org/u/dscott)\
**Replies:** 3\
**Last updated:** [10 April 2020 06:28 UTC](https://discourse.nodered.org/t/cant-load-node-red-along-side-hoobs-3-on-a-pi4/24565 "2020-04-10T06:28:18Z")

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Hello, I've looked through the forum and discovered two other posts with the same issue as me. I attempted to load Node-Red alongside Hoobs3. On the hoobs 3 website they claim this can be done here https://hoobs.org/kno…

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## [Switch object info to diffrent outputs](https://discourse.nodered.org/t/switch-object-info-to-diffrent-outputs/24558)

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**Author:** [@espenbo](https://discourse.nodered.org/u/espenbo)\
**Replies:** 5\
**Last updated:** [10 April 2020 05:24 UTC](https://discourse.nodered.org/t/switch-object-info-to-diffrent-outputs/24558 "2020-04-10T05:24:34Z")

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Hello I have a output from a energy meter. I can send it to a mqtt broker. But how do i switch the object info from the meter node to diffrent messageses. I'm intrested inn the values from: act\_pow\_pos: act\_pow\_n…

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## [Node-red locally with webhook url](https://discourse.nodered.org/t/node-red-locally-with-webhook-url/24563)

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**Author:** [@lexcus](https://discourse.nodered.org/u/lexcus)\
**Replies:** 0\
**Last updated:** [10 April 2020 04:15 UTC](https://discourse.nodered.org/t/node-red-locally-with-webhook-url/24563 "2020-04-10T04:15:26Z")

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Hello, did anyone known how to create the node-red url for webhook my node-red is download locally did you guys known how to connect the webhook for node-red to connect to facebook messenger and line messaging

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## [Demo on how to display graphics (P5.js) in dashboard widget](https://discourse.nodered.org/t/demo-on-how-to-display-graphics-p5-js-in-dashboard-widget/24437)

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**Author:** [@jibeer](https://discourse.nodered.org/u/jibeer)\
**Replies:** 3\
**Last updated:** [10 April 2020 00:27 UTC](https://discourse.nodered.org/t/demo-on-how-to-display-graphics-p5-js-in-dashboard-widget/24437 "2020-04-10T00:27:46Z")

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Hi there ! Just sharing a small flow that allows to display P5.js graphics in a widget. The trick is to use iframe. Controls here are possible thru mqtt. Code based on the three.js demo found in https://flows…

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## [This site can't be reached](https://discourse.nodered.org/t/this-site-cant-be-reached/24546)

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**Author:** [@panafrican](https://discourse.nodered.org/u/panafrican)\
**Replies:** 2\
**Last updated:** [9 April 2020 22:55 UTC](https://discourse.nodered.org/t/this-site-cant-be-reached/24546 "2020-04-09T22:55:22Z")

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I suddenly can't open Node-RED running on RPi3A+. I have Node-RED as a bookmark with the address 127.0.0.1:1880/#flow/27d1362d.4b7eda. After startup and a little wait, I get these messages when I use the bookmark: "Th…

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## [Text update not work for me with svg-grafics node](https://discourse.nodered.org/t/text-update-not-work-for-me-with-svg-grafics-node/24033)

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**Author:** [@d0d04m3](https://discourse.nodered.org/u/d0d04m3)\
**Replies:** 9\
**Last updated:** [9 April 2020 21:55 UTC](https://discourse.nodered.org/t/text-update-not-work-for-me-with-svg-grafics-node/24033 "2020-04-09T21:55:19Z")

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hi please help me i design dashboard with svg editor but i cant updated or changed any text with both way exp: { "command": "update\_text", "selector": "#e1\_texte", "textContent": "test" } and with inject msg {"ti…

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## [Error writing to 1602 LCD Using lcd node](https://discourse.nodered.org/t/error-writing-to-1602-lcd-using-lcd-node/24549)

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**Author:** [@lavoieeric1](https://discourse.nodered.org/u/lavoieeric1)\
**Replies:** 0\
**Last updated:** [9 April 2020 20:46 UTC](https://discourse.nodered.org/t/error-writing-to-1602-lcd-using-lcd-node/24549 "2020-04-09T20:46:01Z")

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Hello I am trying to send text to a 1602a LCD on raspberry pi 3+ using the Node-Red LCD node but I always get a typedError message. I have search all over for the correct format with no success. I am pretty sure the wi…

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## [Simple Door Sensor with Email Notification](https://discourse.nodered.org/t/simple-door-sensor-with-email-notification/24539)

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**Author:** [@rnormore](https://discourse.nodered.org/u/rnormore)\
**Replies:** 1\
**Last updated:** [9 April 2020 20:11 UTC](https://discourse.nodered.org/t/simple-door-sensor-with-email-notification/24539 "2020-04-09T20:11:43Z")

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Hi Folks I am a new user to Node Red. I am looking to do a simple project. I have one zwave door sensor which is showing connected in node red and I can see the state change from on and off when opening and closing door…

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## [Performance issue when lots of typedinputs](https://discourse.nodered.org/t/performance-issue-when-lots-of-typedinputs/23922)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 11\
**Last updated:** [9 April 2020 19:51 UTC](https://discourse.nodered.org/t/performance-issue-when-lots-of-typedinputs/23922 "2020-04-09T19:51:02Z")

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Hi folks, @Steve-Mcl and I developed last year the node-red-contrib-ui-svg node, but seems we have a performance problem for larger drawings. I managed to solve one of the causes, but now I'm stuck with the large numbe…

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## [MOXA Serial Convertor: "node-red-node-serialport" node - Resolved](https://discourse.nodered.org/t/moxa-serial-convertor-node-red-node-serialport-node-resolved/19845)

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**Author:** [@n61ab](https://discourse.nodered.org/u/n61ab)\
**Replies:** 5\
**Last updated:** [9 April 2020 19:29 UTC](https://discourse.nodered.org/t/moxa-serial-convertor-node-red-node-serialport-node-resolved/19845 "2020-04-09T19:29:15Z")

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I want to use a MOXA N5100A serial convertor to input an RS232 stream to Node-Red. Node-Red is running on a Raspberry Pi 4, Raspian OS. In Node-Red, I am using the "node-red-node-serialport" node. I have successfully …

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## [Combine similar payloads then split](https://discourse.nodered.org/t/combine-similar-payloads-then-split/24284)

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**Author:** [@srynearson](https://discourse.nodered.org/u/srynearson)\
**Replies:** 4\
**Last updated:** [9 April 2020 19:08 UTC](https://discourse.nodered.org/t/combine-similar-payloads-then-split/24284 "2020-04-09T19:08:52Z")

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Hi all, I am trying to combine two streams of data. One feed has some of the attributes I need, and the other has the rest. Each stream has many nodes but most of the nodes can be singled out in each stream by their MAC …

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## [Remove white spaces](https://discourse.nodered.org/t/remove-white-spaces/24541)

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**Author:** [@srynearson](https://discourse.nodered.org/u/srynearson)\
**Replies:** 3\
**Last updated:** [9 April 2020 18:16 UTC](https://discourse.nodered.org/t/remove-white-spaces/24541 "2020-04-09T18:16:14Z")

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This might be an easy question to answer but I have not been able to figure it out. I have an incoming flow that has white spaces in some of the ordered pairs. What nodes can I use to remove the white spaces? I tried rep…

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## [Create an dashboard by photon that connect to ncd thermocouple](https://discourse.nodered.org/t/create-an-dashboard-by-photon-that-connect-to-ncd-thermocouple/11382)

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**Author:** [@deb](https://discourse.nodered.org/u/deb)\
**Replies:** 5\
**Last updated:** [9 April 2020 18:11 UTC](https://discourse.nodered.org/t/create-an-dashboard-by-photon-that-connect-to-ncd-thermocouple/11382 "2020-04-09T18:11:11Z")

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I have an thermocouple ( IoT Long Range Wireless Thermocouple Temperature Sensor) by ncd and I want to make a dashboard that show the connection by the Photon (Particle) and the thermocouple. I made the sensors mannuals …

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## [Issues using $parent. from a subflow](https://discourse.nodered.org/t/issues-using-parent-from-a-subflow/23231)

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**Author:** [@nileio](https://discourse.nodered.org/u/nileio)\
**Replies:** 14\
**Last updated:** [9 April 2020 18:06 UTC](https://discourse.nodered.org/t/issues-using-parent-from-a-subflow/23231 "2020-04-09T18:06:06Z")

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Hi all, I am facing issues with using $parent.var from a subflow in order to access the parent flow context. Though my context variable exists, the subflow does not return any value. It does not even return undefined. t…

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## [Flow =\> wifi outlet =\> mqtt =\> node-red =\> cloud Iot core](https://discourse.nodered.org/t/flow-wifi-outlet-mqtt-node-red-cloud-iot-core/24493)

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**Author:** [@chuckinSpace](https://discourse.nodered.org/u/chuckinSpace)\
**Replies:** 10\
**Last updated:** [9 April 2020 17:29 UTC](https://discourse.nodered.org/t/flow-wifi-outlet-mqtt-node-red-cloud-iot-core/24493 "2020-04-09T17:29:37Z")

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Hi my friends, first of all sorry for my ignorance but I just landed on node-red after being researching about the IoT world, I can seem to understand how to connect a real device, like a tecking wifi outlet, that is cur…

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## [UI-SVG attributeValue of an attributeName?](https://discourse.nodered.org/t/ui-svg-attributevalue-of-an-attributename/24445)

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**Author:** [@d0d04m3](https://discourse.nodered.org/u/d0d04m3)\
**Replies:** 15\
**Last updated:** [9 April 2020 16:46 UTC](https://discourse.nodered.org/t/ui-svg-attributevalue-of-an-attributename/24445 "2020-04-09T16:46:17Z")

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How to get attributeValue of an attributeName svg element? exp \<svg ..... fill:red......\> wen set attributeName -\> fill I get red

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## [Server features and blynk](https://discourse.nodered.org/t/server-features-and-blynk/24536)

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**Author:** [@stepic7](https://discourse.nodered.org/u/stepic7)\
**Replies:** 0\
**Last updated:** [9 April 2020 16:39 UTC](https://discourse.nodered.org/t/server-features-and-blynk/24536 "2020-04-09T16:39:40Z")

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Sorry I am new, just trying to choose the IoT instrument I need the questions: Blynk is a user interface to interact with most IoT hardware also through the internet by its Server capabilities Does Node-RED similarly…

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## [\[Flow\] Corona Virus - Map](https://discourse.nodered.org/t/flow-corona-virus-map/23072)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 34\
**Last updated:** [9 April 2020 15:36 UTC](https://discourse.nodered.org/t/flow-corona-virus-map/23072 "2020-04-09T15:36:59Z")

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I have created a flow to (somewhat) track the daily Corona virus via worldmap, it retrieves (yesterday's) statistics from github and produces a map. Flow posted here: https://flows.nodered.org/flow/3bfc75934d243f5288…

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## [Reply on chromecast message](https://discourse.nodered.org/t/reply-on-chromecast-message/24531)

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**Author:** [@Robert\_it](https://discourse.nodered.org/u/Robert_it)\
**Replies:** 0\
**Last updated:** [9 April 2020 15:11 UTC](https://discourse.nodered.org/t/reply-on-chromecast-message/24531 "2020-04-09T15:11:57Z")

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Newbee question I have not been able to find the answer on? I want to send a msg to my chromecast only after it has already spoken another msg. first. The first msg id triggered by a door sensor + 30 sec delay and then …

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## [Syntax for deprecated context.myvar instead of context.set()](https://discourse.nodered.org/t/syntax-for-deprecated-context-myvar-instead-of-context-set/24523)

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**Author:** [@JGKK](https://discourse.nodered.org/u/JGKK)\
**Replies:** 1\
**Last updated:** [9 April 2020 13:52 UTC](https://discourse.nodered.org/t/syntax-for-deprecated-context-myvar-instead-of-context-set/24523 "2020-04-09T13:52:13Z")

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I don't know if im having an especially slow day but I cant figure out the syntax for the "deprecated" method to use and set context variables that was used before context.get(). Why do I need it? Im running into the ci…

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## [Node-red-nodegen Help](https://discourse.nodered.org/t/node-red-nodegen-help/3705)

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**Author:** [@mako](https://discourse.nodered.org/u/mako)\
**Replies:** 9\
**Last updated:** [9 April 2020 14:04 UTC](https://discourse.nodered.org/t/node-red-nodegen-help/3705 "2020-04-09T14:04:13Z")

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Hello Chaps. I have been trying to get this Npm to work but not having to much look Using Example 2 Example 2. Create original node from function node (JavaScript code) On Node-RED flow editor, save function node…

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## [Zwave configuration seems to be lost when nodered restart](https://discourse.nodered.org/t/zwave-configuration-seems-to-be-lost-when-nodered-restart/24504)

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**Author:** [@louison](https://discourse.nodered.org/u/louison)\
**Replies:** 1\
**Last updated:** [9 April 2020 13:31 UTC](https://discourse.nodered.org/t/zwave-configuration-seems-to-be-lost-when-nodered-restart/24504 "2020-04-09T13:31:06Z")

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Hello, I'm using node-red-contrib-openzwave to communicate with my zwave sensors and AeotechGen5 Zwave dongle to manage. I'm using this flow below in example: https://flows.nodered.org/flow/41ae75dbfbe6465d5cf40248e250…

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