# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1240

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

**Page:** 1241

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## [ASCII characters display](https://discourse.nodered.org/t/ascii-characters-display/14481)

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**Author:** [@Madhumati](https://discourse.nodered.org/u/Madhumati)\
**Replies:** 10\
**Last updated:** [20 August 2019 09:20 UTC](https://discourse.nodered.org/t/ascii-characters-display/14481 "2019-08-20T09:20:26Z")

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Hi, I want to dispaly data from ASCII RFID over node-RED dashboard....Is it possible to display ASCII characters on dashboard? I am able to display decimal data.. .is there any function block for decimal to ascii co…

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## [Problem Update Data in Multiple Line Chart](https://discourse.nodered.org/t/problem-update-data-in-multiple-line-chart/11351)

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**Author:** [@mrizkywiguna](https://discourse.nodered.org/u/mrizkywiguna)\
**Replies:** 2\
**Last updated:** [20 August 2019 09:16 UTC](https://discourse.nodered.org/t/problem-update-data-in-multiple-line-chart/11351 "2019-08-20T09:16:45Z")

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Hi All, I've problem with my project to create line chart. This chart combine in fix circle data and real time data, but the real time data doesn't work each the input data is updated. It only moving point to point, not…

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## [Node-RED on Bluemix: how to serve ui as root w/o showing editor](https://discourse.nodered.org/t/node-red-on-bluemix-how-to-serve-ui-as-root-w-o-showing-editor/14531)

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**Author:** [@vittali](https://discourse.nodered.org/u/vittali)\
**Replies:** 1\
**Last updated:** [20 August 2019 09:09 UTC](https://discourse.nodered.org/t/node-red-on-bluemix-how-to-serve-ui-as-root-w-o-showing-editor/14531 "2019-08-20T09:09:32Z")

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Hi When running Node-RED on Bluemix based on the develop-local suggested workflow by Nick, I would like to serve only the /ui path when running on the cloud and make the editor (including the login in screen unavailable…

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## [How To Get Connections Number For TCP In Node?](https://discourse.nodered.org/t/how-to-get-connections-number-for-tcp-in-node/14231)

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**Author:** [@mrizkywiguna](https://discourse.nodered.org/u/mrizkywiguna)\
**Replies:** 7\
**Last updated:** [20 August 2019 09:06 UTC](https://discourse.nodered.org/t/how-to-get-connections-number-for-tcp-in-node/14231 "2019-08-20T09:06:32Z")

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Hi All, Is there a way to know the number of connections of TCP In Node? Because i want to make status if the TCP is connected or not connected. Regards, mrizky

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## [Splitting data from msg.payload](https://discourse.nodered.org/t/splitting-data-from-msg-payload/14473)

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**Author:** [@benjamingotke](https://discourse.nodered.org/u/benjamingotke)\
**Replies:** 11\
**Last updated:** [20 August 2019 08:09 UTC](https://discourse.nodered.org/t/splitting-data-from-msg-payload/14473 "2019-08-20T08:09:57Z")

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Hi All I'm trying to get values from Victron Ve.Direct USB device, but I have troubles spitting the informations to value I can use in the Node-Red Dashboard. From the Ve.Direct USB i'm getting following informations: …

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## [Updating Node-RED on IBM Cloud](https://discourse.nodered.org/t/updating-node-red-on-ibm-cloud/9671)

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**Author:** [@mascapollo](https://discourse.nodered.org/u/mascapollo)\
**Replies:** 1\
**Last updated:** [20 August 2019 07:52 UTC](https://discourse.nodered.org/t/updating-node-red-on-ibm-cloud/9671 "2019-08-20T07:52:37Z")

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I upgraded node red to 0.20.3 on IBM Cloud using the instructions in this link: https://nodered.org/docs/platforms/bluemix Then I got an error saying that for node-red-node-email 1.3.0 needs node.js version \>=8. So I e…

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## [PiJuice status to NodeRed](https://discourse.nodered.org/t/pijuice-status-to-nodered/14243)

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**Author:** [@benjamingotke](https://discourse.nodered.org/u/benjamingotke)\
**Replies:** 13\
**Last updated:** [20 August 2019 06:48 UTC](https://discourse.nodered.org/t/pijuice-status-to-nodered/14243 "2019-08-20T06:48:38Z")

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Hi All! I'm working on a project with a Raspberry Pi with Node-Red. I would like to have the dashboard showing the status of the battery of the PiJuice-hat and the informations comming there. Does anyone know how to do …

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## [How to get two users with different authority to log in the same session on different devices?](https://discourse.nodered.org/t/how-to-get-two-users-with-different-authority-to-log-in-the-same-session-on-different-devices/14518)

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**Author:** [@narv](https://discourse.nodered.org/u/narv)\
**Replies:** 1\
**Last updated:** [20 August 2019 06:07 UTC](https://discourse.nodered.org/t/how-to-get-two-users-with-different-authority-to-log-in-the-same-session-on-different-devices/14518 "2019-08-20T06:07:05Z")

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I want to have a template that can be accessed by two users (admin and guest). An admin has the authority to access more buttons than a guest. I also want the admin and guest to be able to access the template in the sa…

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## [Flow for mqtt and domotic](https://discourse.nodered.org/t/flow-for-mqtt-and-domotic/14505)

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**Author:** [@pvanklink](https://discourse.nodered.org/u/pvanklink)\
**Replies:** 0\
**Last updated:** [19 August 2019 20:53 UTC](https://discourse.nodered.org/t/flow-for-mqtt-and-domotic/14505 "2019-08-19T20:53:27Z")

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Hi, i like to pass complex IFTTT body content like this: \[{"obj":"lantaarn1","act":"On"},{"obj":"lantaarn2","act":"On"}\] in a variable (msg.payload.value = "compex received ifttt body" as it is from IFTTT to MQTTT/dom…

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## [JSON RESTful API into Node Red via POST, out using UDP Node](https://discourse.nodered.org/t/json-restful-api-into-node-red-via-post-out-using-udp-node/14234)

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**Author:** [@fisha462](https://discourse.nodered.org/u/fisha462)\
**Replies:** 2\
**Last updated:** [19 August 2019 22:22 UTC](https://discourse.nodered.org/t/json-restful-api-into-node-red-via-post-out-using-udp-node/14234 "2019-08-19T22:22:55Z")

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Hi all, very very new to node-red here. I have a device that will POST data to an endpoint. I then need to parse out specific values, convert to ASCII, and encapsulate in a UDP or TCP configured unicast. It seems like …

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## [\[NEW FEATURE\] node-red-contrib-queue-gate (version 1.2.0)](https://discourse.nodered.org/t/new-feature-node-red-contrib-queue-gate-version-1-2-0/14506)

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**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 0\
**Last updated:** [19 August 2019 22:14 UTC](https://discourse.nodered.org/t/new-feature-node-red-contrib-queue-gate-version-1-2-0/14506 "2019-08-19T22:14:44Z")

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This update adds the option of persistence for the state of the gate and the contents of the queue. (See Github, issue #6 ) Previously, the node would enter the Default State on startup, either when first deployed in th…

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## [Stuck with change node](https://discourse.nodered.org/t/stuck-with-change-node/14465)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 10\
**Last updated:** [19 August 2019 21:47 UTC](https://discourse.nodered.org/t/stuck-with-change-node/14465 "2019-08-19T21:47:02Z")

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I'm having issues with the second change node. I can't seem to get the syntax right for it to work. Its a simple flow, I may be abusing MQTT by embedding data in the topic, but it seems to work quite well except I can'…

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## [Buffering tweets](https://discourse.nodered.org/t/buffering-tweets/14477)

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**Author:** [@yzerman](https://discourse.nodered.org/u/yzerman)\
**Replies:** 14\
**Last updated:** [19 August 2019 20:49 UTC](https://discourse.nodered.org/t/buffering-tweets/14477 "2019-08-19T20:49:49Z")

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Hello, i have a flow that listen for tweets and controlling servo. Do you please give me suggestions what can i need to do to prevent when many tweets are send at the same time. May be i need to put delay node after twi…

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## [Authentication Control](https://discourse.nodered.org/t/authentication-control/14492)

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**Author:** [@rwiest](https://discourse.nodered.org/u/rwiest)\
**Replies:** 2\
**Last updated:** [19 August 2019 19:32 UTC](https://discourse.nodered.org/t/authentication-control/14492 "2019-08-19T19:32:24Z")

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Hello, is there any flow that I can use as authentication control between two types of users? Where can each access specific information?

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## [Extra Characters after base64 Decoding](https://discourse.nodered.org/t/extra-characters-after-base64-decoding/14498)

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**Author:** [@Manjot](https://discourse.nodered.org/u/Manjot)\
**Replies:** 5\
**Last updated:** [19 August 2019 17:35 UTC](https://discourse.nodered.org/t/extra-characters-after-base64-decoding/14498 "2019-08-19T17:35:40Z")

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Hi I am reading accelerometer data from chip and sending it to the server and my node red is subscribed to the topic that reads the accelerometer data. In Node Red, I am using function node with the following code: va…

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## [Problem with context](https://discourse.nodered.org/t/problem-with-context/14500)

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**Author:** [@jayheavner](https://discourse.nodered.org/u/jayheavner)\
**Replies:** 2\
**Last updated:** [19 August 2019 17:21 UTC](https://discourse.nodered.org/t/problem-with-context/14500 "2019-08-19T17:21:03Z")

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I'm running node-red under Docker. I'm trying to use the filesystem for my global context. My node-red volume is mounted to :/data:Z I've set my settings.js as... contextStorage: { storeInFile: { module…

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## [Help - how can I reduce memory footprint of node-red](https://discourse.nodered.org/t/help-how-can-i-reduce-memory-footprint-of-node-red/14376)

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**Author:** [@odys](https://discourse.nodered.org/u/odys)\
**Replies:** 10\
**Last updated:** [19 August 2019 17:04 UTC](https://discourse.nodered.org/t/help-how-can-i-reduce-memory-footprint-of-node-red/14376 "2019-08-19T17:04:10Z")

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Hey everyone, I am currently working on a PoC device-service for the EdgeX project, in essence the node-red service is a RESTful glue between the EdgeX IoT platform and lora-app-server. It consists of 2 flows that will…

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## [JSON data to Dashboard Chart](https://discourse.nodered.org/t/json-data-to-dashboard-chart/3792)

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**Author:** [@adrian](https://discourse.nodered.org/u/adrian)\
**Replies:** 6\
**Last updated:** [19 August 2019 15:30 UTC](https://discourse.nodered.org/t/json-data-to-dashboard-chart/3792 "2019-08-19T15:30:35Z")

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Hi, I'm trying to visualize data from a JSON using a Chart node and I need help. It's data from a temperature sensor, and retreived using the Thinkspeak.com API What is the best way to plot these data to the Dashboard …

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## [Modbus many devices](https://discourse.nodered.org/t/modbus-many-devices/14483)

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**Author:** [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Replies:** 0\
**Last updated:** [19 August 2019 10:20 UTC](https://discourse.nodered.org/t/modbus-many-devices/14483 "2019-08-19T10:20:54Z")

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Hello Node Red community. Is somehow possible to read values from many slaves connected with modbus? And with minimum nodes of course.

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## [Chart.js node - cannot GET TP01](https://discourse.nodered.org/t/chart-js-node-cannot-get-tp01/14457)

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**Author:** [@EdwardDM10](https://discourse.nodered.org/u/EdwardDM10)\
**Replies:** 9\
**Last updated:** [19 August 2019 09:41 UTC](https://discourse.nodered.org/t/chart-js-node-cannot-get-tp01/14457 "2019-08-19T09:41:02Z")

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Again, total newbie so pointers would be most welcome. I've downloaded this - ...but am struggling to get it to work. I've set up the flow as per the example on the page (I think) and put it on a 30 second trigger. …

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## [Help with twitter node and servo](https://discourse.nodered.org/t/help-with-twitter-node-and-servo/14450)

<div class="topic-metadata">

**Author:** [@yzerman](https://discourse.nodered.org/u/yzerman)\
**Replies:** 9\
**Last updated:** [19 August 2019 09:03 UTC](https://discourse.nodered.org/t/help-with-twitter-node-and-servo/14450 "2019-08-19T09:03:52Z")

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Hello, i have a problem with flow that controls servo motor via twitter node. When i receive tweet with given keyword the servo should go at 120 waits 5s. and goes to 0. The problem is that i receive error in my debug …

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## [Struggling with Google Calendar on 2nd NR instance](https://discourse.nodered.org/t/struggling-with-google-calendar-on-2nd-nr-instance/14471)

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**Author:** [@michaelblight](https://discourse.nodered.org/u/michaelblight)\
**Replies:** 1\
**Last updated:** [19 August 2019 08:20 UTC](https://discourse.nodered.org/t/struggling-with-google-calendar-on-2nd-nr-instance/14471 "2019-08-19T08:20:23Z")

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I have the Google Calendar node configured in the Node Red add-on to hass.io. I did this ages ago, so I'm not sure if I had much trouble. Now I want to use the same node in another Node Red Docker install on another mac…

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## [JSON persistence with NodeRed- Redis or PostGreSQL or?](https://discourse.nodered.org/t/json-persistence-with-nodered-redis-or-postgresql-or/11511)

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**Author:** [@tony-shannon](https://discourse.nodered.org/u/tony-shannon)\
**Replies:** 16\
**Last updated:** [19 August 2019 04:50 UTC](https://discourse.nodered.org/t/json-persistence-with-nodered-redis-or-postgresql-or/11511 "2019-08-19T04:50:02Z")

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Dear NodeRed community Could I ask for views/experiences please? As JSON is central to NodeRed, APIs etc, plus a pretty common way to store data now, could I ask for views on what database may be best to use for JSON p…

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## [Bug in node.send?](https://discourse.nodered.org/t/bug-in-node-send/11177)

<div class="topic-metadata">

**Author:** [@Albatroz](https://discourse.nodered.org/u/Albatroz)\
**Replies:** 6\
**Last updated:** [19 August 2019 04:41 UTC](https://discourse.nodered.org/t/bug-in-node-send/11177 "2019-08-19T04:41:07Z")

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I created a stream where the message goes through a loop and inside the loop I make a node.send on each iteration for the next node to store the information in the file, however the information is repeated several times …

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## [Please disclose contrib node acceptance criteria](https://discourse.nodered.org/t/please-disclose-contrib-node-acceptance-criteria/14464)

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**Author:** [@ianmacs](https://discourse.nodered.org/u/ianmacs)\
**Replies:** 2\
**Last updated:** [18 August 2019 22:13 UTC](https://discourse.nodered.org/t/please-disclose-contrib-node-acceptance-criteria/14464 "2019-08-18T22:13:44Z")

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I created my first contrib node today and had trouble getting it to appear in the palette manager. My last 3 commits were basically wild guesses trying to meet the (seemingly secret) acceptance criteria. My node is final…

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## [Problem with dynamic table in ui\_template](https://discourse.nodered.org/t/problem-with-dynamic-table-in-ui-template/14401)

<div class="topic-metadata">

**Author:** [@seth350](https://discourse.nodered.org/u/seth350)\
**Replies:** 2\
**Last updated:** [18 August 2019 20:56 UTC](https://discourse.nodered.org/t/problem-with-dynamic-table-in-ui-template/14401 "2019-08-18T20:56:12Z")

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I have a table that is generated in a ui\_template node that is causing me grief. The object of this flow is to process alarms as they occur and add a date-time specifying when the alarm occured and then add the alarm to…

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## [New node didn't show up on this site](https://discourse.nodered.org/t/new-node-didnt-show-up-on-this-site/1385)

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**Author:** [@blechdom](https://discourse.nodered.org/u/blechdom)\
**Replies:** 3\
**Last updated:** [18 August 2019 20:23 UTC](https://discourse.nodered.org/t/new-node-didnt-show-up-on-this-site/1385 "2019-08-18T20:23:50Z")

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I created my first node called node-red-contrib-dmxusbpro I can see it and download it manually from npm, but it doesn't show up on the flows page of this website. Can someone let me know if I did everything correctly? …

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## [Modbus rtu to modbus tcp bridge](https://discourse.nodered.org/t/modbus-rtu-to-modbus-tcp-bridge/14461)

<div class="topic-metadata">

**Author:** [@Matthias250881](https://discourse.nodered.org/u/Matthias250881)\
**Replies:** 0\
**Last updated:** [18 August 2019 18:56 UTC](https://discourse.nodered.org/t/modbus-rtu-to-modbus-tcp-bridge/14461 "2019-08-18T18:56:28Z")

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Hello is it possible to bridge a modbus rtu holding register to modbus tcp? I have a Energiemeter with rs485. I can read the holding with Id 1 adress 0 register 3. Can I bridge it to modbus tcp?

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## [Need some help with a varable JSON](https://discourse.nodered.org/t/need-some-help-with-a-varable-json/14210)

<div class="topic-metadata">

**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 25\
**Last updated:** [18 August 2019 16:07 UTC](https://discourse.nodered.org/t/need-some-help-with-a-varable-json/14210 "2019-08-18T16:07:19Z")

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Hi, i want to use the slider to set a timer with the time i sent with the slider ... can someone show me how to set the the "template" that the "timeout" is variable. Thanks in advance Felix \[{"id":"64c3829f.e20b0c"…

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## [Gauge, change properties dynamically](https://discourse.nodered.org/t/gauge-change-properties-dynamically/14445)

<div class="topic-metadata">

**Author:** [@iungo](https://discourse.nodered.org/u/iungo)\
**Replies:** 3\
**Last updated:** [18 August 2019 15:18 UTC](https://discourse.nodered.org/t/gauge-change-properties-dynamically/14445 "2019-08-18T15:18:14Z")

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Is it possible to change the gauge properties dynamically via input message? I need to change min&max range and sectors properties.

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