# Latest

**URL:** https://discourse.nodered.org/latest.md?page=471

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

**Page:** 472

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## [How to refresh global variable](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820)

<div class="topic-metadata">

**Author:** [@rush\_cs](https://discourse.nodered.org/u/rush_cs)\
**Replies:** 4\
**Last updated:** [31 October 2022 10:49 UTC](https://discourse.nodered.org/t/how-to-refresh-global-variable/69820 "2022-10-31T10:49:03Z")

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I am currently using global variables to display data from different function. The data does not display real time changes. if I stop the flow, the value of the output changes. How can I make it so the values being displ…

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## [How to prompt password reset after first login](https://discourse.nodered.org/t/how-to-prompt-password-reset-after-first-login/69816)

<div class="topic-metadata">

**Author:** [@MOUNIKA0536](https://discourse.nodered.org/u/MOUNIKA0536)\
**Replies:** 1\
**Last updated:** [31 October 2022 09:47 UTC](https://discourse.nodered.org/t/how-to-prompt-password-reset-after-first-login/69816 "2022-10-31T09:47:29Z")

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Hi, We have a requirement that custom nodes are delivered as container image which is built on top of node-red base image. For security reasons, we added user in node-red with default credentials which will be shared se…

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## [Can't get email on Pi 3 Ubuntu](https://discourse.nodered.org/t/cant-get-email-on-pi-3-ubuntu/69813)

<div class="topic-metadata">

**Author:** [@LasseMartinell](https://discourse.nodered.org/u/LasseMartinell)\
**Replies:** 4\
**Last updated:** [31 October 2022 08:47 UTC](https://discourse.nodered.org/t/cant-get-email-on-pi-3-ubuntu/69813 "2022-10-31T08:47:15Z")

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I have installed node-red-node-mail. I have 2 computers running node-red. When upgrade the Mac I lost data and have to rebuild the flow. So I invested in a Raspberry Pi 3 to get a stabile computer. It works on the Mac bu…

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## [Help with redis](https://discourse.nodered.org/t/help-with-redis/69806)

<div class="topic-metadata">

**Author:** [@greengolfer](https://discourse.nodered.org/u/greengolfer)\
**Replies:** 1\
**Last updated:** [31 October 2022 07:19 UTC](https://discourse.nodered.org/t/help-with-redis/69806 "2022-10-31T07:19:55Z")

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Hello, I am using https://flows.nodered.org/node/node-red-contrib-redis. I have some issues to find the right syntax when using the cmd node. As the documentation is pretty scarce I wonder if someone can help here. I w…

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## [Pycomm3 - Logixdriver](https://discourse.nodered.org/t/pycomm3-logixdriver/69807)

<div class="topic-metadata">

**Author:** [@damica51](https://discourse.nodered.org/u/damica51)\
**Replies:** 2\
**Last updated:** [31 October 2022 00:44 UTC](https://discourse.nodered.org/t/pycomm3-logixdriver/69807 "2022-10-31T00:44:13Z")

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I've seen some examples of a simple python program reading and writing tags to the Allen Bradley Micro 820 (800 series plc). Has anyone looked at creating a Node for this function? I'm to much of a beginner to attempt t…

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## [Help with multiple lines on inject node](https://discourse.nodered.org/t/help-with-multiple-lines-on-inject-node/69768)

<div class="topic-metadata">

**Author:** [@itcouldbeL](https://discourse.nodered.org/u/itcouldbeL)\
**Replies:** 3\
**Last updated:** [30 October 2022 22:42 UTC](https://discourse.nodered.org/t/help-with-multiple-lines-on-inject-node/69768 "2022-10-30T22:42:12Z")

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Hi again, I'm working on a system which extracts info from an email and triggers events based on the input. all the hard part is done regarding regex etc, as I originally built this outside of node red. Now that I'm t…

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## [S7comm node-red; input signal and path from inject payload](https://discourse.nodered.org/t/s7comm-node-red-input-signal-and-path-from-inject-payload/69605)

<div class="topic-metadata">

**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 2\
**Last updated:** [30 October 2022 21:05 UTC](https://discourse.nodered.org/t/s7comm-node-red-input-signal-and-path-from-inject-payload/69605 "2022-10-30T21:05:29Z")

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I all, I'm writing a node-red code with s7comm node. I would like pass the signal and path message from a injection instead of set it in the "connection parameter" this because I would create a general code with could w…

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## [Joining msg.payload and then sending to SQLite. Two entries instead of one](https://discourse.nodered.org/t/joining-msg-payload-and-then-sending-to-sqlite-two-entries-instead-of-one/69804)

<div class="topic-metadata">

**Author:** [@jjo998](https://discourse.nodered.org/u/jjo998)\
**Replies:** 2\
**Last updated:** [30 October 2022 20:14 UTC](https://discourse.nodered.org/t/joining-msg-payload-and-then-sending-to-sqlite-two-entries-instead-of-one/69804 "2022-10-30T20:14:49Z")

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Hi there, I'm very new to node red so apologies in advance if I make a mis-step with posting for help. My question outlined here, is how do I get two MQTT messages to input into an SQLite database as a single entry. I …

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## [How to use different IPs with mqtt](https://discourse.nodered.org/t/how-to-use-different-ips-with-mqtt/69785)

<div class="topic-metadata">

**Author:** [@shaunfish](https://discourse.nodered.org/u/shaunfish)\
**Replies:** 14\
**Last updated:** [30 October 2022 17:32 UTC](https://discourse.nodered.org/t/how-to-use-different-ips-with-mqtt/69785 "2022-10-30T17:32:56Z")

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Hi all I am very new to node-red and have a simple question(to some). I have two Raspberry pi's that I want to monitor from my windows laptop, I have set up a flow but I cant seem to use the two different pi IP addr…

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## [Node-red restarts of their own accord?](https://discourse.nodered.org/t/node-red-restarts-of-their-own-accord/69766)

<div class="topic-metadata">

**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 21\
**Last updated:** [30 October 2022 16:32 UTC](https://discourse.nodered.org/t/node-red-restarts-of-their-own-accord/69766 "2022-10-30T16:32:55Z")

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A few weeks ago, when we left on vacation and I'd bought some smart water sensors, I'd rigged some automations to turn on a pair of shop vacs in the basement if the water sensors detected that the basement was flooding. …

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## [Join two times same array, how?](https://discourse.nodered.org/t/join-two-times-same-array-how/69754)

<div class="topic-metadata">

**Author:** [@alexandrechoske](https://discourse.nodered.org/u/alexandrechoske)\
**Replies:** 3\
**Last updated:** [30 October 2022 16:18 UTC](https://discourse.nodered.org/t/join-two-times-same-array-how/69754 "2022-10-30T16:18:37Z")

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Hi guys, I am facing a hard time here with array and need some help. Basically what I am trying to do is to join 2 arrays, but here is a little bit more complicated because I have 2 ids on arr2, and the id in arr1. Exa…

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## [Custom node - property validation isn't reflected in the editor UI](https://discourse.nodered.org/t/custom-node-property-validation-isnt-reflected-in-the-editor-ui/69200)

<div class="topic-metadata">

**Author:** [@jackcarey](https://discourse.nodered.org/u/jackcarey)\
**Replies:** 2\
**Last updated:** [30 October 2022 13:28 UTC](https://discourse.nodered.org/t/custom-node-property-validation-isnt-reflected-in-the-editor-ui/69200 "2022-10-30T13:28:15Z")

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Hello, I'm having an issue with my property validation when setting up the editor UI. My invalid input does not have a red border around it and the code I set up to toggle a validation message for the URL field does not …

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## [General Query : Subflows vs. Link Call - Roadmap](https://discourse.nodered.org/t/general-query-subflows-vs-link-call-roadmap/69788)

<div class="topic-metadata">

**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 3\
**Last updated:** [30 October 2022 11:03 UTC](https://discourse.nodered.org/t/general-query-subflows-vs-link-call-roadmap/69788 "2022-10-30T11:03:00Z")

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Hi , I have a general query - How does NR team see the roadmap / future of subflows vs. Link Call. The main merit of Subflows which i see is - Parameterization - parameters allow on subflow definition - even if stat…

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## [Port 1880 does not work in Docker on a Raspi 400](https://discourse.nodered.org/t/port-1880-does-not-work-in-docker-on-a-raspi-400/69638)

<div class="topic-metadata">

**Author:** [@MPerezP](https://discourse.nodered.org/u/MPerezP)\
**Replies:** 13\
**Last updated:** [30 October 2022 10:40 UTC](https://discourse.nodered.org/t/port-1880-does-not-work-in-docker-on-a-raspi-400/69638 "2022-10-30T10:40:44Z")

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I an trying to install nodered over docker in Raspi 400. I have to use the command "docker run..." with all options as recommended in GitHub. Including "-p 1880:1880". But when I run this command and try to see the node…

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## [Raspberry Pi 4 forum?](https://discourse.nodered.org/t/raspberry-pi-4-forum/69748)

<div class="topic-metadata">

**Author:** [@damica51](https://discourse.nodered.org/u/damica51)\
**Replies:** 6\
**Last updated:** [30 October 2022 10:20 UTC](https://discourse.nodered.org/t/raspberry-pi-4-forum/69748 "2022-10-30T10:20:19Z")

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I realize this has nothing to do with this forum, I'm just asking if anyone know what is going on. I have been trying to register in the raspberry pi forum, I have created an account and it say it's going to send email …

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## [Set node config values as \`undefined\`](https://discourse.nodered.org/t/set-node-config-values-as-undefined/69781)

<div class="topic-metadata">

**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Replies:** 4\
**Last updated:** [30 October 2022 08:18 UTC](https://discourse.nodered.org/t/set-node-config-values-as-undefined/69781 "2022-10-30T08:18:34Z")

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So... This might be a really simple thing I am missing... But I am migrating a node over to typescript. and I have a need to set a config value as undefined if its length is \<1... setting this.someConfigValue = undef…

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## [Node-Red HTTP Request and session cookies](https://discourse.nodered.org/t/node-red-http-request-and-session-cookies/6236)

<div class="topic-metadata">

**Author:** [@masterz666](https://discourse.nodered.org/u/masterz666)\
**Replies:** 3\
**Last updated:** [30 October 2022 07:41 UTC](https://discourse.nodered.org/t/node-red-http-request-and-session-cookies/6236 "2022-10-30T07:41:44Z")

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Hi, I'm trying to control my alarm system (Somfy protexiom 800) from Node-Red. My starting point was a shell script by jcjames\_13009 (located here: \[Bash\] Script alarme Somfy Protexiom 5000 - Forum Domoticz en français)…

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## [How to send a binary file to MQTT](https://discourse.nodered.org/t/how-to-send-a-binary-file-to-mqtt/69780)

<div class="topic-metadata">

**Author:** [@jsail](https://discourse.nodered.org/u/jsail)\
**Replies:** 5\
**Last updated:** [29 October 2022 23:22 UTC](https://discourse.nodered.org/t/how-to-send-a-binary-file-to-mqtt/69780 "2022-10-29T23:22:13Z")

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I would like to send a small photo to the MQTT broker. Unfortunately I only find a CMD call for it: mosquitto\_pub -t test -f file

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## [How to config mqtt by "POST /flows"(remotely way) with username and passwd](https://discourse.nodered.org/t/how-to-config-mqtt-by-post-flows-remotely-way-with-username-and-passwd/69776)

<div class="topic-metadata">

**Author:** [@joe1](https://discourse.nodered.org/u/joe1)\
**Replies:** 3\
**Last updated:** [29 October 2022 17:55 UTC](https://discourse.nodered.org/t/how-to-config-mqtt-by-post-flows-remotely-way-with-username-and-passwd/69776 "2022-10-29T17:55:04Z")

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I'm used "POST /flows" remotely api is effect,but in mqtt-broker-json can't set password and username ,I do not know the key in json. please tell me . nodered-version:v2.1.6 ex "type": "mqtt-broker", .... { "id": "…

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## [Range node requested action "Scale and drop message outside input range"](https://discourse.nodered.org/t/range-node-requested-action-scale-and-drop-message-outside-input-range/69772)

<div class="topic-metadata">

**Author:** [@mrdvt92](https://discourse.nodered.org/u/mrdvt92)\
**Replies:** 2\
**Last updated:** [29 October 2022 16:46 UTC](https://discourse.nodered.org/t/range-node-requested-action-scale-and-drop-message-outside-input-range/69772 "2022-10-29T16:46:41Z")

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I believe that using the range node to drop out of bounds data would be a great addition to the node capability. I find that I need this capability often but there is no easy way to implement this capability without work…

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## [Feature Request: Dynamic Link-Call enhancements](https://discourse.nodered.org/t/feature-request-dynamic-link-call-enhancements/69635)

<div class="topic-metadata">

**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 9\
**Last updated:** [29 October 2022 15:26 UTC](https://discourse.nodered.org/t/feature-request-dynamic-link-call-enhancements/69635 "2022-10-29T15:26:02Z")

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Hi @Steve-Mcl , Node-Red Team Gentle prod - would you know if the FR for changes to Link Call node per below is planned to be picked up for 3.1 ? FR - Fixed Target Link Call - 2 new FR requests Thanks in advance.

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## [Feature Request: Confirm Delete Flow](https://discourse.nodered.org/t/feature-request-confirm-delete-flow/5339)

<div class="topic-metadata">

**Author:** [@bugs181](https://discourse.nodered.org/u/bugs181)\
**Replies:** 9\
**Last updated:** [29 October 2022 12:44 UTC](https://discourse.nodered.org/t/feature-request-confirm-delete-flow/5339 "2022-10-29T12:44:51Z")

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:thought\_balloon: As the title states, a great opportunity to improve the user experience would be a Confirm dialog - such as the one used when there are errors on the flow, with a Confirm button when a user is going to…

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## [SMTP input causes crash (Windows)](https://discourse.nodered.org/t/smtp-input-causes-crash-windows/69697)

<div class="topic-metadata">

**Author:** [@itcouldbeL](https://discourse.nodered.org/u/itcouldbeL)\
**Replies:** 5\
**Last updated:** [29 October 2022 12:40 UTC](https://discourse.nodered.org/t/smtp-input-causes-crash-windows/69697 "2022-10-29T12:40:16Z")

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Hi, Thanks for welcoming me to the forum! I really hate to be that person who asks for help on a first post, but here we are... I've got a brand new windows 10 pro machine which I installed node-red on to parse some lo…

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## [UI Variables Storage Scenario](https://discourse.nodered.org/t/ui-variables-storage-scenario/69764)

<div class="topic-metadata">

**Author:** [@interscope101](https://discourse.nodered.org/u/interscope101)\
**Replies:** 0\
**Last updated:** [29 October 2022 09:35 UTC](https://discourse.nodered.org/t/ui-variables-storage-scenario/69764 "2022-10-29T09:35:37Z")

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Hi there, I am trying to figure out how to implement the following scenario . Lets say I have several global/flow variables (A,B,C) used in various ways throughout the flow (displays, calculations, etc.). On the UI…

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## [How to link inject node to the node-red dashboard button](https://discourse.nodered.org/t/how-to-link-inject-node-to-the-node-red-dashboard-button/69619)

<div class="topic-metadata">

**Author:** [@Vedant](https://discourse.nodered.org/u/Vedant)\
**Replies:** 3\
**Last updated:** [29 October 2022 08:15 UTC](https://discourse.nodered.org/t/how-to-link-inject-node-to-the-node-red-dashboard-button/69619 "2022-10-29T08:15:34Z")

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Hello everyone, I am currently sending some data to a robot controller by inputing it's ip address and port number. There are some extra fields for eg the command number and the value written into the robot. I use injec…

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## [Changing file dynamicaly in media node](https://discourse.nodered.org/t/changing-file-dynamicaly-in-media-node/69695)

<div class="topic-metadata">

**Author:** [@jhoepffner](https://discourse.nodered.org/u/jhoepffner)\
**Replies:** 2\
**Last updated:** [29 October 2022 07:30 UTC](https://discourse.nodered.org/t/changing-file-dynamicaly-in-media-node/69695 "2022-10-29T07:30:01Z")

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Hello, I search to change dynamicaly an image file in media node. I wrote msg.payload = {"category": "portraits", "name": "MalouAirodo.jpg"} The original image disapears but there is only the "not found" icon. The f…

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## [Check msg.payload in array](https://discourse.nodered.org/t/check-msg-payload-in-array/69756)

<div class="topic-metadata">

**Author:** [@yingkhun](https://discourse.nodered.org/u/yingkhun)\
**Replies:** 3\
**Last updated:** [29 October 2022 06:46 UTC](https://discourse.nodered.org/t/check-msg-payload-in-array/69756 "2022-10-29T06:46:31Z")

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hi I'm new in nodered and nodeJS I need to know how to check if message in array like python var my\_array = \["a", "b", "c", "d", "e"\] msg.payload = "c" if msg.payload in my\_array {do something} how to coding Thank…

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## [How to change an object to array](https://discourse.nodered.org/t/how-to-change-an-object-to-array/69719)

<div class="topic-metadata">

**Author:** [@Percy](https://discourse.nodered.org/u/Percy)\
**Replies:** 2\
**Last updated:** [29 October 2022 03:35 UTC](https://discourse.nodered.org/t/how-to-change-an-object-to-array/69719 "2022-10-29T03:35:16Z")

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Hello, we are working on a project. We get some difficulties in it. We try to change our object to array so we can but it to our ui-table. but our function is not working because there is an error call "Circular". we are…

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## [Unofficial log file? openaq.log](https://discourse.nodered.org/t/unofficial-log-file-openaq-log/69700)

<div class="topic-metadata">

**Author:** [@Matt.L](https://discourse.nodered.org/u/Matt.L)\
**Replies:** 12\
**Last updated:** [28 October 2022 22:07 UTC](https://discourse.nodered.org/t/unofficial-log-file-openaq-log/69700 "2022-10-28T22:07:12Z")

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On my RasPi running Node-Red, I recently discovered ~/.node-red/openaq.log mainly as it was taking up a bunch of space :slight\_smile: I had changed my logging level when looking into a previous issue I was having with No…

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## [Unable to install node-red-contrib-modbus](https://discourse.nodered.org/t/unable-to-install-node-red-contrib-modbus/66307)

<div class="topic-metadata">

**Author:** [@parkdev](https://discourse.nodered.org/u/parkdev)\
**Replies:** 4\
**Last updated:** [28 October 2022 22:00 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-contrib-modbus/66307 "2022-10-28T22:00:15Z")

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Hi guys, I'm having issues getting this installed and have ran out of ideas on how to get it to work. So far I've tried a complete reinstall, setting NODE\_TLS\_REJECT\_UNAUTHORIZED=0, tried a manual installation. Nothing …

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