# Latest

**URL:** https://discourse.nodered.org/latest.md?page=993

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

**Page:** 994

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## [The best way to check exists or not the session, key, value of the ini file](https://discourse.nodered.org/t/the-best-way-to-check-exists-or-not-the-session-key-value-of-the-ini-file/33287)

<div class="topic-metadata">

**Author:** [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)\
**Replies:** 0\
**Last updated:** [24 September 2020 13:33 UTC](https://discourse.nodered.org/t/the-best-way-to-check-exists-or-not-the-session-key-value-of-the-ini-file/33287 "2020-09-24T13:33:28Z")

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Hi, I would like to check if the session, key, value of an ini file exists or not using Node-RED \[SESSION1\] KEY1=Value1 KEY2=Value2 KEY3=Value3 \[SESSION2\] KEY1=Dummy1 KEY2=Dummy2 the session, key of the ini file will…

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## [Contact LED Location Release](https://discourse.nodered.org/t/contact-led-location-release/33266)

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**Author:** [@murondo](https://discourse.nodered.org/u/murondo)\
**Replies:** 2\
**Last updated:** [24 September 2020 13:07 UTC](https://discourse.nodered.org/t/contact-led-location-release/33266 "2020-09-24T13:07:40Z")

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How do you put the LEDs here in front of the letters as shown in the picture below?

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## [Node-Red connection to another device, from a server](https://discourse.nodered.org/t/node-red-connection-to-another-device-from-a-server/33249)

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**Author:** [@andrews150](https://discourse.nodered.org/u/andrews150)\
**Replies:** 6\
**Last updated:** [24 September 2020 12:56 UTC](https://discourse.nodered.org/t/node-red-connection-to-another-device-from-a-server/33249 "2020-09-24T12:56:51Z")

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Hello all, I have been working with a server on a desktop and have connected a device that is running Node-Red (Advantech ADAM 6750) and when I go to the Chrome web browser and type in the url "(ADAM ip):1880/hello" it …

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## [Convert decimal to hex and back after transformation](https://discourse.nodered.org/t/convert-decimal-to-hex-and-back-after-transformation/33280)

<div class="topic-metadata">

**Author:** [@John245](https://discourse.nodered.org/u/John245)\
**Replies:** 4\
**Last updated:** [24 September 2020 12:21 UTC](https://discourse.nodered.org/t/convert-decimal-to-hex-and-back-after-transformation/33280 "2020-09-24T12:21:01Z")

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I want to do the following. msg.payload\[8\]=12 msg.payload\[9\]=39161 I want to convert msg.payload\[8\] and \[9\] to Hex numbers (respectively C and 98F9). I have several issues. how do I convert to Hex numbers how do I …

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## [How to use the ini node](https://discourse.nodered.org/t/how-to-use-the-ini-node/33272)

<div class="topic-metadata">

**Author:** [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)\
**Replies:** 4\
**Last updated:** [24 September 2020 10:01 UTC](https://discourse.nodered.org/t/how-to-use-the-ini-node/33272 "2020-09-24T10:01:32Z")

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I have installed ini node (node-red-contrib-parser-ini) to read INI file, but do not know how to configure in the red frame below to be able to read the ini file with this node. Please tell me! Thanks. \[{"id":"11f5…

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## [Custom nodes to inherit linking from link-in, link-out nodes](https://discourse.nodered.org/t/custom-nodes-to-inherit-linking-from-link-in-link-out-nodes/33061)

<div class="topic-metadata">

**Author:** [@pitus](https://discourse.nodered.org/u/pitus)\
**Replies:** 10\
**Last updated:** [24 September 2020 09:40 UTC](https://discourse.nodered.org/t/custom-nodes-to-inherit-linking-from-link-in-link-out-nodes/33061 "2020-09-24T09:40:19Z")

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I'd like to be able to add virtual wires between my own custom nodes and have them behave similar to how link-in / link-out pair does it - shows the normally invisible port with a dashed wire when selected, possibly with…

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## [Link node connection disappearing](https://discourse.nodered.org/t/link-node-connection-disappearing/33271)

<div class="topic-metadata">

**Author:** [@r0ller](https://discourse.nodered.org/u/r0ller)\
**Replies:** 0\
**Last updated:** [24 September 2020 08:54 UTC](https://discourse.nodered.org/t/link-node-connection-disappearing/33271 "2020-09-24T08:54:21Z")

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Hi All, This seems to be similar to two other issues reported earlier: This time I noticed that an existing connection via link nodes between two flows broke so I checked what goes wrong. When I clicked on the link…

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## [functionGlobalContext: require with @](https://discourse.nodered.org/t/functionglobalcontext-require-with/33263)

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**Author:** [@christl](https://discourse.nodered.org/u/christl)\
**Replies:** 4\
**Last updated:** [24 September 2020 08:38 UTC](https://discourse.nodered.org/t/functionglobalcontext-require-with/33263 "2020-09-24T08:38:35Z")

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I am trying to access a standalone library in a function node and the approach shown in generic nodejs examples for the require command looks like this: const sgMail = require('@sendgrid/mail'); I have added the follow…

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## [Moving node into Group at the same position doesn't offer to Save Flow](https://discourse.nodered.org/t/moving-node-into-group-at-the-same-position-doesnt-offer-to-save-flow/33257)

<div class="topic-metadata">

**Author:** [@pitus](https://discourse.nodered.org/u/pitus)\
**Replies:** 1\
**Last updated:** [24 September 2020 08:27 UTC](https://discourse.nodered.org/t/moving-node-into-group-at-the-same-position-doesnt-offer-to-save-flow/33257 "2020-09-24T08:27:15Z")

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A strange issue I've discovered by accident. Create a Group with some nodes Copy and paste additional nodes from another Group into this one Note how the pasted nodes are not really included in the Group, just layered …

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## [Store a value in a function](https://discourse.nodered.org/t/store-a-value-in-a-function/990)

<div class="topic-metadata">

**Author:** [@Sjoerd](https://discourse.nodered.org/u/Sjoerd)\
**Replies:** 5\
**Last updated:** [24 September 2020 08:09 UTC](https://discourse.nodered.org/t/store-a-value-in-a-function/990 "2020-09-24T08:09:16Z")

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Is there a way to store a value in a function node for future use? I want to do the following: A message contains a certain variable with a certain value. This message is received every 5 minutes. I want to compare the v…

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## [Help- Creation of custom dashboard](https://discourse.nodered.org/t/help-creation-of-custom-dashboard/33254)

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**Author:** [@Rohit](https://discourse.nodered.org/u/Rohit)\
**Replies:** 2\
**Last updated:** [24 September 2020 07:52 UTC](https://discourse.nodered.org/t/help-creation-of-custom-dashboard/33254 "2020-09-24T07:52:35Z")

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Hi all, Could anybody help me out to find the relevant details as my requirement is mentioned below. -\> I need to create a custom dashboard, when I choose the template node, I see that I need to know Angular JS to make…

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## [Nodered and firestore](https://discourse.nodered.org/t/nodered-and-firestore/33261)

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**Author:** [@alex1](https://discourse.nodered.org/u/alex1)\
**Replies:** 0\
**Last updated:** [24 September 2020 07:21 UTC](https://discourse.nodered.org/t/nodered-and-firestore/33261 "2020-09-24T07:21:20Z")

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How can i store a string into the firestore instead of only single alphabet?

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## [MODBUS - Write boolean to Word](https://discourse.nodered.org/t/modbus-write-boolean-to-word/33039)

<div class="topic-metadata">

**Author:** [@AMBFrancesco](https://discourse.nodered.org/u/AMBFrancesco)\
**Replies:** 9\
**Last updated:** [24 September 2020 07:11 UTC](https://discourse.nodered.org/t/modbus-write-boolean-to-word/33039 "2020-09-24T07:11:25Z")

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Hi, I'd like to write throgh a modbus connection a boolean into the corresponding bit contained in a WORD in my PLC, but I can't write the single bit to the FC Holding register. I use node-red-contrib-modbus. When I re…

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## [Group outline (selection) gets stuck after copy/paste of a node within it](https://discourse.nodered.org/t/group-outline-selection-gets-stuck-after-copy-paste-of-a-node-within-it/33256)

<div class="topic-metadata">

**Author:** [@pitus](https://discourse.nodered.org/u/pitus)\
**Replies:** 1\
**Last updated:** [24 September 2020 05:47 UTC](https://discourse.nodered.org/t/group-outline-selection-gets-stuck-after-copy-paste-of-a-node-within-it/33256 "2020-09-24T05:47:59Z")

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When I copy and paste a node that's within a Group, that Group's dashed outline remains active/stuck even if I select another Group and it never clears (until the page is reloaded). Drop a couple of nodes from Palette…

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## [Source format of node-red project](https://discourse.nodered.org/t/source-format-of-node-red-project/33214)

<div class="topic-metadata">

**Author:** [@sys4cad](https://discourse.nodered.org/u/sys4cad)\
**Replies:** 10\
**Last updated:** [24 September 2020 03:58 UTC](https://discourse.nodered.org/t/source-format-of-node-red-project/33214 "2020-09-24T03:58:05Z")

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saving node-red project with gitlab currently node-red project is saved w/ one-line json string and it makes me hard to identify changed item using any of git client. Is there anyway to save source as pretty json for…

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## [Node Red Docker - New File as Root](https://discourse.nodered.org/t/node-red-docker-new-file-as-root/33209)

<div class="topic-metadata">

**Author:** [@Paulf007](https://discourse.nodered.org/u/Paulf007)\
**Replies:** 4\
**Last updated:** [24 September 2020 01:32 UTC](https://discourse.nodered.org/t/node-red-docker-new-file-as-root/33209 "2020-09-24T01:32:14Z")

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I am creating a .txt file within node red that is running in a Docker Container. (Default settings apart from having a external folder linked to the container. ) The file is created with a simple inject and all of that …

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## [\[uibuilder\] Easy toast notifications](https://discourse.nodered.org/t/uibuilder-easy-toast-notifications/33252)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 2\
**Last updated:** [24 September 2020 00:28 UTC](https://discourse.nodered.org/t/uibuilder-easy-toast-notifications/33252 "2020-09-24T00:28:05Z")

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One of the issues that some people find when switching to uibuilder from Dashboard is that they are faced with writing more HTML/CSS/JavaScript front-end code than they may be used to (or comfortable with). I chose VueJ…

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## [Serial port node delimiter parser](https://discourse.nodered.org/t/serial-port-node-delimiter-parser/33246)

<div class="topic-metadata">

**Author:** [@davidz](https://discourse.nodered.org/u/davidz)\
**Replies:** 1\
**Last updated:** [23 September 2020 22:41 UTC](https://discourse.nodered.org/t/serial-port-node-delimiter-parser/33246 "2020-09-23T22:41:54Z")

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The current serial port node has the option of splitting the input data with a single character such as "0x0A". However, since there could be data with value of "0x0A", the split result could be wrong when there is data …

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## [Use to develop distributed event driven applications](https://discourse.nodered.org/t/use-to-develop-distributed-event-driven-applications/33161)

<div class="topic-metadata">

**Author:** [@DrRuhe](https://discourse.nodered.org/u/DrRuhe)\
**Replies:** 12\
**Last updated:** [23 September 2020 22:33 UTC](https://discourse.nodered.org/t/use-to-develop-distributed-event-driven-applications/33161 "2020-09-23T22:33:28Z")

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Hi, This is less of a feature request for node-red itself since IMO it does not really fit into the core concept of noder-ed. This is more of a thing I would like and would work on, but I would like some feedback on it …

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## [Timer in function node](https://discourse.nodered.org/t/timer-in-function-node/33197)

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**Author:** [@krzydec](https://discourse.nodered.org/u/krzydec)\
**Replies:** 7\
**Last updated:** [23 September 2020 21:00 UTC](https://discourse.nodered.org/t/timer-in-function-node/33197 "2020-09-23T21:00:32Z")

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Hello. I would like to make a countdown timer using a function node. Counter needs to be reset to its initial value when the function is triggered, so as long the function is triggered before the counter value reaches …

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## [Howto: Dashboard button link to url with no UI template for only the current user on the page](https://discourse.nodered.org/t/howto-dashboard-button-link-to-url-with-no-ui-template-for-only-the-current-user-on-the-page/33210)

<div class="topic-metadata">

**Author:** [@meeki007](https://discourse.nodered.org/u/meeki007)\
**Replies:** 3\
**Last updated:** [23 September 2020 20:57 UTC](https://discourse.nodered.org/t/howto-dashboard-button-link-to-url-with-no-ui-template-for-only-the-current-user-on-the-page/33210 "2020-09-23T20:57:48Z")

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I've seen a form of this question popup here from time to time. Many of us are not html gods and can't do much in the UI template node. And it does not format to the nice dashboard style without tons of css work. Yes y…

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## [Loop in function node don´t send all topics into sqlite database](https://discourse.nodered.org/t/loop-in-function-node-don-t-send-all-topics-into-sqlite-database/33230)

<div class="topic-metadata">

**Author:** [@ZsomborPiros](https://discourse.nodered.org/u/ZsomborPiros)\
**Replies:** 2\
**Last updated:** [23 September 2020 20:08 UTC](https://discourse.nodered.org/t/loop-in-function-node-don-t-send-all-topics-into-sqlite-database/33230 "2020-09-23T20:08:53Z")

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Hi, i want to safe key-value pairs in a database. Because i dont found some options i integrated sqlite in my flow. My problem is the function node doesn´t send all topics. When i inject i should have 111 entries but it …

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## [Worldmap - Local mapserver](https://discourse.nodered.org/t/worldmap-local-mapserver/33244)

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**Author:** [@DaveDave](https://discourse.nodered.org/u/DaveDave)\
**Replies:** 1\
**Last updated:** [23 September 2020 20:04 UTC](https://discourse.nodered.org/t/worldmap-local-mapserver/33244 "2020-09-23T20:04:19Z")

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Hello, I'm really enjoying the Worldmap node (node-red-contrib-web-worldmap). Great project and lots of options! I'm hoping someone else has used this node in an "offline" setting, with no access to internet. In its …

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## [Initial widths of table columns issue. Bug?](https://discourse.nodered.org/t/initial-widths-of-table-columns-issue-bug/33247)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 1\
**Last updated:** [23 September 2020 19:43 UTC](https://discourse.nodered.org/t/initial-widths-of-table-columns-issue-bug/33247 "2020-09-23T19:43:25Z")

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I get this behavior often now... If don't set any column sizing, the table always draws correctly, but if I set column sizing (say percentages per column) I sometimes get the following. Pushing updated data to the n…

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## [How to create a node that defines a global variable](https://discourse.nodered.org/t/how-to-create-a-node-that-defines-a-global-variable/33240)

<div class="topic-metadata">

**Author:** [@minhhn0205](https://discourse.nodered.org/u/minhhn0205)\
**Replies:** 2\
**Last updated:** [23 September 2020 18:15 UTC](https://discourse.nodered.org/t/how-to-create-a-node-that-defines-a-global-variable/33240 "2020-09-23T18:15:40Z")

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Before going into the main function, I want to define the functions and variables common for the node-red application. I created a flow like below, but when start then the main function is executed 4 times \[{"id":"7f…

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## [Tradfri / ZBbridge (zigbee) / Tasmota commands in Node-Red](https://discourse.nodered.org/t/tradfri-zbbridge-zigbee-tasmota-commands-in-node-red/32969)

<div class="topic-metadata">

**Author:** [@yogy](https://discourse.nodered.org/u/yogy)\
**Replies:** 6\
**Last updated:** [23 September 2020 17:42 UTC](https://discourse.nodered.org/t/tradfri-zbbridge-zigbee-tasmota-commands-in-node-red/32969 "2020-09-23T17:42:10Z")

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Struggling to find the correct syntax for power on / off a tradfri lightbulb with a SonOff ZBbridge with Tasmota on it from Node-Red. I have lots of other switches witch I control from Node-red, but the ZBbridge in betw…

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## [How do i - Three position slide switch in title bar?](https://discourse.nodered.org/t/how-do-i-three-position-slide-switch-in-title-bar/33237)

<div class="topic-metadata">

**Author:** [@Zodiac-69](https://discourse.nodered.org/u/Zodiac-69)\
**Replies:** 0\
**Last updated:** [23 September 2020 14:46 UTC](https://discourse.nodered.org/t/how-do-i-three-position-slide-switch-in-title-bar/33237 "2020-09-23T14:46:18Z")

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Hi All This is a two part question. How do i do a three way slide switch - That can simulate a 3 postilion switch - Left-Middle-Right How do i place it on the title bar. I would like the "Selector" switch to be avail…

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## [Button in title bar](https://discourse.nodered.org/t/button-in-title-bar/33229)

<div class="topic-metadata">

**Author:** [@unsumplex](https://discourse.nodered.org/u/unsumplex)\
**Replies:** 1\
**Last updated:** [23 September 2020 13:34 UTC](https://discourse.nodered.org/t/button-in-title-bar/33229 "2020-09-23T13:34:58Z")

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Hello, I am trying to create buttons in the title bar that will send a msg on click. I am using an ui\_template and creating the button is no problem. I am failing on sending the msg on click, here is my code in the ui\_…

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## [Define IP of a configuration node with a context variable](https://discourse.nodered.org/t/define-ip-of-a-configuration-node-with-a-context-variable/33225)

<div class="topic-metadata">

**Author:** [@densalzmann](https://discourse.nodered.org/u/densalzmann)\
**Replies:** 2\
**Last updated:** [23 September 2020 13:10 UTC](https://discourse.nodered.org/t/define-ip-of-a-configuration-node-with-a-context-variable/33225 "2020-09-23T13:10:08Z")

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Hi! Are there some opportunities to define the IP address of a configuration node with a context variable? There are no errors when I'm trying it with flow.set(), flow.get(), but it doesn't work. I use version 5.13.3 o…

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## [Create many database with a loop](https://discourse.nodered.org/t/create-many-database-with-a-loop/33215)

<div class="topic-metadata">

**Author:** [@kalpino](https://discourse.nodered.org/u/kalpino)\
**Replies:** 4\
**Last updated:** [23 September 2020 12:51 UTC](https://discourse.nodered.org/t/create-many-database-with-a-loop/33215 "2020-09-23T12:51:26Z")

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Hello, I'm using sqlite node to create a database and fill it with data. During development I found out it would be handy to create more than one database with a loop. For example I would like to create 10 databases wi…

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