# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=951

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

**Page:** 952

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## [Get Description of nodes in a flow programatically](https://discourse.nodered.org/t/get-description-of-nodes-in-a-flow-programatically/2635)

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**Author:** [@malinthasa](https://discourse.nodered.org/u/malinthasa)\
**Replies:** 11\
**Last updated:** [31 August 2018 20:19 UTC](https://discourse.nodered.org/t/get-description-of-nodes-in-a-flow-programatically/2635 "2018-08-31T20:19:32Z")

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Hi, I need to get the description of the nodes in a flow programmatically for further processing tasks. I can get this description content manually by selecting the required node set and then using Export -\>Clipbord in …

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## [Login Page needs its own URL](https://discourse.nodered.org/t/login-page-needs-its-own-url/2714)

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**Author:** [@webxl](https://discourse.nodered.org/u/webxl)\
**Replies:** 3\
**Last updated:** [31 August 2018 13:26 UTC](https://discourse.nodered.org/t/login-page-needs-its-own-url/2714 "2018-08-31T13:26:15Z")

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The primary reason for this is my damn 1password extension, which I assume sees that my node-red instance is one big very complicated login page, since the base URL (excluding the hash) never changes. 1Password X (beta) …

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## [Can I control the multiple gpio pins of range pi through the internet?](https://discourse.nodered.org/t/can-i-control-the-multiple-gpio-pins-of-range-pi-through-the-internet/2713)

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**Author:** [@rckanta](https://discourse.nodered.org/u/rckanta)\
**Replies:** 4\
**Last updated:** [31 August 2018 13:20 UTC](https://discourse.nodered.org/t/can-i-control-the-multiple-gpio-pins-of-range-pi-through-the-internet/2713 "2018-08-31T13:20:01Z")

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Can I control the multiple gpio pins of range pi through the internet?

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## [In node red dashboard palette,dash (-) is replaced by space.How to resolve it?](https://discourse.nodered.org/t/in-node-red-dashboard-palette-dash-is-replaced-by-space-how-to-resolve-it/2723)

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**Author:** [@rajbir123](https://discourse.nodered.org/u/rajbir123)\
**Replies:** 1\
**Last updated:** [31 August 2018 10:05 UTC](https://discourse.nodered.org/t/in-node-red-dashboard-palette-dash-is-replaced-by-space-how-to-resolve-it/2723 "2018-08-31T10:05:44Z")

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In node red dashboard palette, if i want to customize the name of node suppose HTTP-response but what I see by default dash (-) is replaced by space and it always give HTTP response. I want to make it HTTP-response in th…

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## [Could I use a Variable?](https://discourse.nodered.org/t/could-i-use-a-variable/2651)

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**Author:** [@acestu](https://discourse.nodered.org/u/acestu)\
**Replies:** 5\
**Last updated:** [31 August 2018 08:24 UTC](https://discourse.nodered.org/t/could-i-use-a-variable/2651 "2018-08-31T08:24:27Z")

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Hi, I have 20 lots of mqtt information coming in and each has a countdown timer so that if nothing comes in within a certain time a zero will be sent to the gauges, when I have a problem I have to reduce the time of the…

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## [Are Subflows the right way to tidy up complex flows?](https://discourse.nodered.org/t/are-subflows-the-right-way-to-tidy-up-complex-flows/2681)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 7\
**Last updated:** [31 August 2018 07:10 UTC](https://discourse.nodered.org/t/are-subflows-the-right-way-to-tidy-up-complex-flows/2681 "2018-08-31T07:10:27Z")

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GUys, I have a fair few nodes and would like to take a "chunk" of them and say all good and done and happy with what they are doing and essentially "put them to bed". This would have the effect of tidying my workspace a…

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## [Saving informations](https://discourse.nodered.org/t/saving-informations/2668)

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**Author:** [@leomozzer](https://discourse.nodered.org/u/leomozzer)\
**Replies:** 11\
**Last updated:** [30 August 2018 20:38 UTC](https://discourse.nodered.org/t/saving-informations/2668 "2018-08-30T20:38:18Z")

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I need to save some inputs of a user, its date, a name, start time and finish time. But don't know where to store. Is it a good idea to make a vector for each variable? This vector must grow each time that I put the info…

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## [Failed to install Chatbot plugin](https://discourse.nodered.org/t/failed-to-install-chatbot-plugin/2670)

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**Author:** [@Paulinho](https://discourse.nodered.org/u/Paulinho)\
**Replies:** 1\
**Last updated:** [30 August 2018 19:46 UTC](https://discourse.nodered.org/t/failed-to-install-chatbot-plugin/2670 "2018-08-30T19:46:20Z")

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Hello, I'm trying to install the node-red-contrib-chatbot in Node\_Red (IBM Watson - https: //\*\*\*\*\*.mybluemix.net/red/#flow/) and is failing as the log image below. The problem is the same as @SoCold and @ david1223 on…

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## [Confirm the request/payload was processed successfully](https://discourse.nodered.org/t/confirm-the-request-payload-was-processed-successfully/2642)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 26\
**Last updated:** [30 August 2018 14:20 UTC](https://discourse.nodered.org/t/confirm-the-request-payload-was-processed-successfully/2642 "2018-08-30T14:20:09Z")

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Hi I’m trying out some flows using the Vera/MIOS Nodes and while I can do some things, I wanted to ask if there was a way I could check that the request/payload I send was processed successfully. For example, if I am s…

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## [Unable to output a response from Watson Assistant.](https://discourse.nodered.org/t/unable-to-output-a-response-from-watson-assistant/2697)

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**Author:** [@labs180](https://discourse.nodered.org/u/labs180)\
**Replies:** 1\
**Last updated:** [30 August 2018 11:29 UTC](https://discourse.nodered.org/t/unable-to-output-a-response-from-watson-assistant/2697 "2018-08-30T11:29:52Z")

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I configured flow as shown in the picture. I want to input the text and return the response I received from Watson Assistant. When I checked the Watson Assistant log data, I found that the inputs and outputs were f…

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## [HDMI Matrix - Send HEX value to IP/Port](https://discourse.nodered.org/t/hdmi-matrix-send-hex-value-to-ip-port/2646)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 12\
**Last updated:** [29 August 2018 22:09 UTC](https://discourse.nodered.org/t/hdmi-matrix-send-hex-value-to-ip-port/2646 "2018-08-29T22:09:23Z")

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Hi One of the things I’m looking to do is to send appropriate hex commands to my IP linked HDMI Matrix. I have this capability working on my home automation controller (using Lua) , but I really wanted to see how I coul…

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## [Workflow and new flows etc](https://discourse.nodered.org/t/workflow-and-new-flows-etc/2648)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 4\
**Last updated:** [29 August 2018 21:41 UTC](https://discourse.nodered.org/t/workflow-and-new-flows-etc/2648 "2018-08-29T21:41:59Z")

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Guys, Interested in how others manage change control, new node introduction, upgrades etc I run my Node-red on a Virtual machine that interfaces to sensors and screens etc with MQTT. I have a reasonable sized NodeRed …

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## [How to output text by Watson Assistant](https://discourse.nodered.org/t/how-to-output-text-by-watson-assistant/2673)

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**Author:** [@labs180](https://discourse.nodered.org/u/labs180)\
**Replies:** 3\
**Last updated:** [29 August 2018 21:00 UTC](https://discourse.nodered.org/t/how-to-output-text-by-watson-assistant/2673 "2018-08-29T21:00:40Z")

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I want to use Watson Assistant to input text and print answers in Node-RED. The Watson Assistant module is saved in "context", and I don't know how to print it. I have placed the function module as shown in the illustr…

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## [Node-red-contrib-osc module issue: "missing node type"](https://discourse.nodered.org/t/node-red-contrib-osc-module-issue-missing-node-type/2665)

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**Author:** [@pictux](https://discourse.nodered.org/u/pictux)\
**Replies:** 2\
**Last updated:** [29 August 2018 19:23 UTC](https://discourse.nodered.org/t/node-red-contrib-osc-module-issue-missing-node-type/2665 "2018-08-29T19:23:33Z")

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Hi there, i have a problem with the node-red-contrib-osc module. Node-Red version 0.19.2. node-red-contrib-osc version 1.1.0 Ubuntu 16.04 (lts) I've installed the module by the palette manager. Once installed, the…

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## [Question about flow with multiple tabs](https://discourse.nodered.org/t/question-about-flow-with-multiple-tabs/2664)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 3\
**Last updated:** [29 August 2018 16:01 UTC](https://discourse.nodered.org/t/question-about-flow-with-multiple-tabs/2664 "2018-08-29T16:01:09Z")

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Node-red and MQTT is really taking over here these days, I've now got eight IOT devices (Raspberry Pi, PiZeroW, and Beaglebone MQTT broker) running, and node-red has saved me a ton of development time and effort. I'm a …

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## [Errors, CATCH and finding the error. Not good](https://discourse.nodered.org/t/errors-catch-and-finding-the-error-not-good/2086)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 22\
**Last updated:** [29 August 2018 13:24 UTC](https://discourse.nodered.org/t/errors-catch-and-finding-the-error-not-good/2086 "2018-08-29T13:24:24Z")

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Hello again. I am not wanting to be the squeaky wheel and am not posting to get attention. As many of you know I am kind of out of my depth with JavaScript but am playing with NR a fair bit. Originally I didn't bother…

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## [Connect and use an SQL db](https://discourse.nodered.org/t/connect-and-use-an-sql-db/2601)

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**Author:** [@Andres](https://discourse.nodered.org/u/Andres)\
**Replies:** 11\
**Last updated:** [29 August 2018 13:16 UTC](https://discourse.nodered.org/t/connect-and-use-an-sql-db/2601 "2018-08-29T13:16:08Z")

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Hi everyone, so i'm new to SQL databases, but i'm trying to learn. I've an db implemented but i can't connect with it, i'm using the "node-red-contrib-sql" and when i configure the server it should (for what i believe) a…

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## [Change node property at runtime](https://discourse.nodered.org/t/change-node-property-at-runtime/2656)

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**Author:** [@CatalinFetoiu](https://discourse.nodered.org/u/CatalinFetoiu)\
**Replies:** 4\
**Last updated:** [29 August 2018 12:23 UTC](https://discourse.nodered.org/t/change-node-property-at-runtime/2656 "2018-08-29T12:23:31Z")

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Is it possible to change a node input property at runtime, from the backend of the node? I tried using config.property = new\_value but it seems it is not correct. Thank you, Catalin

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## [How to encode a JSON packet like {"id":{"noData":True}} (Sigfox downlink type)](https://discourse.nodered.org/t/how-to-encode-a-json-packet-like-id-nodata-true-sigfox-downlink-type/2625)

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**Author:** [@svi](https://discourse.nodered.org/u/svi)\
**Replies:** 5\
**Last updated:** [29 August 2018 09:23 UTC](https://discourse.nodered.org/t/how-to-encode-a-json-packet-like-id-nodata-true-sigfox-downlink-type/2625 "2018-08-29T09:23:37Z")

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I want to encode the downlink packet of a Sigfox device. Two type of packets can be sent: response={"21f400":{"noData":True}} response={"21f400":{"downlinkData":"dadadadadadadada"}} I have done it before in python th…

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## [How to compare consecutive payloads in node-red?](https://discourse.nodered.org/t/how-to-compare-consecutive-payloads-in-node-red/2637)

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**Author:** [@Asw](https://discourse.nodered.org/u/Asw)\
**Replies:** 4\
**Last updated:** [29 August 2018 04:37 UTC](https://discourse.nodered.org/t/how-to-compare-consecutive-payloads-in-node-red/2637 "2018-08-29T04:37:56Z")

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Hello everyone , I am relatively new to node-red , I wanted to know How to compare consecutive payloads in node-red , I am actually getting stream of payloads from same source and wanted to compute values , for this p…

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## [Variable timers](https://discourse.nodered.org/t/variable-timers/2497)

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**Author:** [@Jumecittu](https://discourse.nodered.org/u/Jumecittu)\
**Replies:** 3\
**Last updated:** [29 August 2018 03:47 UTC](https://discourse.nodered.org/t/variable-timers/2497 "2018-08-29T03:47:18Z")

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Hi everyone , I'm Enzo a new community member. I've a problem that I can not solve. I have a node that send me a number es 3 , 5 ,7 etc for me that numbers are second, i have a second node takes in input these second an…

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## [Advice for best approach please](https://discourse.nodered.org/t/advice-for-best-approach-please/284)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 10\
**Last updated:** [29 August 2018 03:45 UTC](https://discourse.nodered.org/t/advice-for-best-approach-please/284 "2018-08-29T03:45:53Z")

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Guys, I am in the process of convert my home heating and cooling system from an old system that was built on Picaxe chips and Basic programming into Arduino and MQTT (using Node-red of course !!) Of course i have left …

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## [Runtime Api from inside the node](https://discourse.nodered.org/t/runtime-api-from-inside-the-node/2638)

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**Author:** [@CatalinFetoiu](https://discourse.nodered.org/u/CatalinFetoiu)\
**Replies:** 2\
**Last updated:** [28 August 2018 20:59 UTC](https://discourse.nodered.org/t/runtime-api-from-inside-the-node/2638 "2018-08-28T20:59:44Z")

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Is there a way to get the entire flow configuration from a specific node, like it is possible using the runtime api? And is it possible for a node A to be notified when a node C that is not connected to A has received a …

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## [HueMagic - Multiple Values in the payload?](https://discourse.nodered.org/t/huemagic-multiple-values-in-the-payload/2644)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 7\
**Last updated:** [28 August 2018 20:50 UTC](https://discourse.nodered.org/t/huemagic-multiple-values-in-the-payload/2644 "2018-08-28T20:50:43Z")

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Hi, Sorry if I’m missing something obvious, but looking at the instructions for hue magic (https://flows.nodered.org/node/node-red-contrib-huemagic) how do I add multiple values within a payload message ? I can turn a …

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## [Updating Node-Red npm problem](https://discourse.nodered.org/t/updating-node-red-npm-problem/2640)

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**Author:** [@scargill](https://discourse.nodered.org/u/scargill)\
**Replies:** 9\
**Last updated:** [28 August 2018 18:57 UTC](https://discourse.nodered.org/t/updating-node-red-npm-problem/2640 "2018-08-28T18:57:44Z")

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I just tried updating Node-Red to 0.19.1 - not the preinstalled version on a PI. On page https://nodered.org/docs/getting-started/upgrading.html it tells you to use the following: \`\`\` sudo npm cache clean sudo npm in…

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## [Use vars in Change Node](https://discourse.nodered.org/t/use-vars-in-change-node/2611)

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**Author:** [@aihysp](https://discourse.nodered.org/u/aihysp)\
**Replies:** 12\
**Last updated:** [28 August 2018 16:33 UTC](https://discourse.nodered.org/t/use-vars-in-change-node/2611 "2018-08-28T16:33:38Z")

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Hi how can input vars in a Change Node lits say i have SQL statement UPDATE openhab.vars SET STATE='XXX' WHERE idVARS='3'; and i want the XXX to be a var that i have let's say a global what to do? maybe something lik…

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## [Partial modified flow deploy](https://discourse.nodered.org/t/partial-modified-flow-deploy/2606)

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**Author:** [@CatalinFetoiu](https://discourse.nodered.org/u/CatalinFetoiu)\
**Replies:** 6\
**Last updated:** [28 August 2018 15:33 UTC](https://discourse.nodered.org/t/partial-modified-flow-deploy/2606 "2018-08-28T15:33:50Z")

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Hello, When a flow is redeployed, but only a part of the nodes being modified, is it possible to enforce the restarting of all the nodes in the flow? Thank you! Catalin

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## [Extract payload value](https://discourse.nodered.org/t/extract-payload-value/2634)

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**Author:** [@kimou](https://discourse.nodered.org/u/kimou)\
**Replies:** 3\
**Last updated:** [28 August 2018 13:33 UTC](https://discourse.nodered.org/t/extract-payload-value/2634 "2018-08-28T13:33:07Z")

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I have this payload and I would like the min and max value. I do not know if I'm doing well but I get nothing. {"bins":\[{"min":4,"max":3}\] } let min = payload.bins.min let max = payload.bins.max Help Please,

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## [Changing msg send interval](https://discourse.nodered.org/t/changing-msg-send-interval/2632)

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**Author:** [@Ruyal](https://discourse.nodered.org/u/Ruyal)\
**Replies:** 3\
**Last updated:** [28 August 2018 12:08 UTC](https://discourse.nodered.org/t/changing-msg-send-interval/2632 "2018-08-28T12:08:19Z")

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Hi! Currently I'm using the inject node, but there doesn't seem to be a way to change the send interval without redeploying. Does anyone know a way I can achieve this? Thanks!

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## [Possible to have subflow in palette with empty/new flowfile?](https://discourse.nodered.org/t/possible-to-have-subflow-in-palette-with-empty-new-flowfile/2626)

<div class="topic-metadata">

**Author:** [@cdlans](https://discourse.nodered.org/u/cdlans)\
**Replies:** 2\
**Last updated:** [28 August 2018 11:32 UTC](https://discourse.nodered.org/t/possible-to-have-subflow-in-palette-with-empty-new-flowfile/2626 "2018-08-28T11:32:54Z")

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We are building an application using Node-RED and have already created a few of our own nodes. I am now in the process of connecting a REST interface as input. For now I have done this with the http request node, the xml …

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