# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1232

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

**Page:** 1233

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## [Node-red custom node variable undefined](https://discourse.nodered.org/t/node-red-custom-node-variable-undefined/15205)

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**Author:** [@krishnaa208](https://discourse.nodered.org/u/krishnaa208)\
**Replies:** 5\
**Last updated:** [7 September 2019 08:15 UTC](https://discourse.nodered.org/t/node-red-custom-node-variable-undefined/15205 "2019-09-07T08:15:18Z")

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Hey I am trying to build a node for that taking input from user in dashboard and filter data based on input but \*\* i count not access array variable in .js ( undefined )\*\* file can someone help contents of .html are : …

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## [Where is Node-RED 1.0?](https://discourse.nodered.org/t/where-is-node-red-1-0/13482)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 27\
**Last updated:** [7 September 2019 07:59 UTC](https://discourse.nodered.org/t/where-is-node-red-1-0/13482 "2019-09-07T07:59:52Z")

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Hi, I've been asked this a couple times, so thought I'd share this post just to keep everyone up to date. The goal was to get Node-RED 1.0 released in June. Whilst we did successfully start publishing betas in June (no…

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## [I am not getting the meaning of the different colours for text in messages](https://discourse.nodered.org/t/i-am-not-getting-the-meaning-of-the-different-colours-for-text-in-messages/15217)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [7 September 2019 07:35 UTC](https://discourse.nodered.org/t/i-am-not-getting-the-meaning-of-the-different-colours-for-text-in-messages/15217 "2019-09-07T07:35:15Z")

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If a message is text, and it is displayed in a debug node it is colour: red with " around it. If it is a number it is blue. If it is true or false it is blue. That's where the problem (for me) starts. In a function n…

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## [Hide/show tabsheet in config node dynamically](https://discourse.nodered.org/t/hide-show-tabsheet-in-config-node-dynamically/15177)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 8\
**Last updated:** [7 September 2019 06:33 UTC](https://discourse.nodered.org/t/hide-show-tabsheet-in-config-node-dynamically/15177 "2019-09-07T06:33:53Z")

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Hi folks, We have 3 tabsheets in the config screen of our node: this.tabs = RED.tabs.create({ id: "node-svg-tabs", }); this.tabs.addTab({ id: "node-svg-tab-source", label: "SVG source" }); this.tabs.add…

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## [Show Image as icon on dashboard](https://discourse.nodered.org/t/show-image-as-icon-on-dashboard/806)

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**Author:** [@bk1989](https://discourse.nodered.org/u/bk1989)\
**Replies:** 17\
**Last updated:** [6 September 2019 23:59 UTC](https://discourse.nodered.org/t/show-image-as-icon-on-dashboard/806 "2019-09-06T23:59:42Z")

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So I’m currently working on a flow using the opc ua and the dashboard nodes to send information form my windows pc to an opc server. Therefore I created an dashboard and use buttons to send int32 to my server. The next s…

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## [Aosong AM2315 temp/rh](https://discourse.nodered.org/t/aosong-am2315-temp-rh/4589)

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**Author:** [@JaSiev](https://discourse.nodered.org/u/JaSiev)\
**Replies:** 14\
**Last updated:** [6 September 2019 18:41 UTC](https://discourse.nodered.org/t/aosong-am2315-temp-rh/4589 "2019-09-06T18:41:14Z")

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Has anyone tried to collect Temp/RH data from a AM2315 sensor? I've tried the i2C in/out nodes with little success (I get a return from the sensor but it doesn't make sense). I can get data through python scripts so I …

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## [MQTT Pub each JSON value](https://discourse.nodered.org/t/mqtt-pub-each-json-value/13570)

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**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 4\
**Last updated:** [6 September 2019 18:10 UTC](https://discourse.nodered.org/t/mqtt-pub-each-json-value/13570 "2019-09-06T18:10:54Z")

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Hi, I'd like to publish several JSON object values from my weather station via MQTT. I am using a http request node to get the JSON object. First I started off using a change node to extract only one value but now I've …

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## [How to Make a RPM-Time Chart Using Hall Effect](https://discourse.nodered.org/t/how-to-make-a-rpm-time-chart-using-hall-effect/15122)

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**Author:** [@george](https://discourse.nodered.org/u/george)\
**Replies:** 5\
**Last updated:** [6 September 2019 14:26 UTC](https://discourse.nodered.org/t/how-to-make-a-rpm-time-chart-using-hall-effect/15122 "2019-09-06T14:26:22Z")

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I currently have a Raspberry Pi 3, a hall effect sensor and a magnet attached to a bicycle's wheel. I'd like to make a real-time RPM vs Time chart that shows the gradual decrease of the wheel's speed (in RPM). but I don'…

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## [🎉 Node-RED 0.20.8 released](https://discourse.nodered.org/t/node-red-0-20-8-released/15192)

<div class="topic-metadata">

**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 3\
**Last updated:** [6 September 2019 13:45 UTC](https://discourse.nodered.org/t/node-red-0-20-8-released/15192 "2019-09-06T13:45:07Z")

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I've just published Node-RED 0.20.8. It contains two fixes: Sanitize tab name in edit dialog - this fixes a potential XSS issue where a well-formed (or badly formed, depending on your perspective) flow name could be u…

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## [Nodes installed but not available - grey dashed boxes in palette](https://discourse.nodered.org/t/nodes-installed-but-not-available-grey-dashed-boxes-in-palette/14945)

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**Author:** [@Bas](https://discourse.nodered.org/u/Bas)\
**Replies:** 10\
**Last updated:** [6 September 2019 13:36 UTC](https://discourse.nodered.org/t/nodes-installed-but-not-available-grey-dashed-boxes-in-palette/14945 "2019-09-06T13:36:02Z")

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Hi there, After installing a few libraries in Node Red some went fine and the node-red-contrib-modbustcp is not working. I see the nodes in de Palette, but the have a grey dashed box instead of a normal colour. The nod…

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## [Re-deploy a node (or entire flow) on event in node](https://discourse.nodered.org/t/re-deploy-a-node-or-entire-flow-on-event-in-node/2008)

<div class="topic-metadata">

**Author:** [@Dr.legendaddy](https://discourse.nodered.org/u/Dr.legendaddy)\
**Replies:** 7\
**Last updated:** [6 September 2019 13:10 UTC](https://discourse.nodered.org/t/re-deploy-a-node-or-entire-flow-on-event-in-node/2008 "2019-09-06T13:10:56Z")

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Sorry for already starting the next topic but this is quite a problem for my workflow so I was hoping there was a way to handle the following issue: I have a node that when it hits an error can only recover by being dep…

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## [Increase canvas size? (supersize flows!)](https://discourse.nodered.org/t/increase-canvas-size-supersize-flows/14855)

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**Author:** [@swiftnesses](https://discourse.nodered.org/u/swiftnesses)\
**Replies:** 15\
**Last updated:** [6 September 2019 11:28 UTC](https://discourse.nodered.org/t/increase-canvas-size-supersize-flows/14855 "2019-09-06T11:28:22Z")

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Good day, I've become fairly involved with Node Red and have a few flows that exceed the width of the canvas, can this be increased via a setting? (fingers crossed it can!). Many thanks for this amazing tool.

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## [Serial port fetching data](https://discourse.nodered.org/t/serial-port-fetching-data/15184)

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**Author:** [@Iliyas](https://discourse.nodered.org/u/Iliyas)\
**Replies:** 9\
**Last updated:** [6 September 2019 07:45 UTC](https://discourse.nodered.org/t/serial-port-fetching-data/15184 "2019-09-06T07:45:10Z")

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Hell, I am able to read the data of my device in windows system through serial request but I am not able to read the data from ubuntu serial port.... Can anybody try to help me out?

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## [Subflows. Inputs and outputs not matching between machines](https://discourse.nodered.org/t/subflows-inputs-and-outputs-not-matching-between-machines/15147)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 22\
**Last updated:** [6 September 2019 05:16 UTC](https://discourse.nodered.org/t/subflows-inputs-and-outputs-not-matching-between-machines/15147 "2019-09-06T05:16:06Z")

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I have written a subflow. It works - as best I can say - on all but one machine. All machines send back their temperature reading, a PING reply and that indicates they are working. So: I'm guessing I have the sub-flo…

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## [Field validation problem](https://discourse.nodered.org/t/field-validation-problem/15084)

<div class="topic-metadata">

**Author:** [@limengsong](https://discourse.nodered.org/u/limengsong)\
**Replies:** 4\
**Last updated:** [5 September 2019 22:37 UTC](https://discourse.nodered.org/t/field-validation-problem/15084 "2019-09-05T22:37:53Z")

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In the blue box as shown, click Edit to bring up the config page. In the config page, the first three fields of the configuration are required. So when you do not fill in the first three fields, the red box will promp…

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## [Using local node for development & testing](https://discourse.nodered.org/t/using-local-node-for-development-testing/15179)

<div class="topic-metadata">

**Author:** [@clickworkorange](https://discourse.nodered.org/u/clickworkorange)\
**Replies:** 3\
**Last updated:** [5 September 2019 22:09 UTC](https://discourse.nodered.org/t/using-local-node-for-development-testing/15179 "2019-09-05T22:09:56Z")

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I wanted to make a small change to the "Smooth" node, so I forked node-red-nodes on GitHub and checked out my fork to a local directory. I had installed NodeJS on my development machine (Devuan ASCII) with sudo apt-get i…

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## [Sports Score Update/Light Flasher](https://discourse.nodered.org/t/sports-score-update-light-flasher/15161)

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**Author:** [@Exit2Studios](https://discourse.nodered.org/u/Exit2Studios)\
**Replies:** 5\
**Last updated:** [5 September 2019 21:35 UTC](https://discourse.nodered.org/t/sports-score-update-light-flasher/15161 "2019-09-05T21:35:17Z")

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With American Football season upon us, I thought it would be fun to build a sports score notifier that flashes lights team colors when they score. I use an app called "The Score" that sends me updates in real time. I'm…

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## [Ds18b20 only one or two digits](https://discourse.nodered.org/t/ds18b20-only-one-or-two-digits/15172)

<div class="topic-metadata">

**Author:** [@RudiRuessel](https://discourse.nodered.org/u/RudiRuessel)\
**Replies:** 4\
**Last updated:** [5 September 2019 21:35 UTC](https://discourse.nodered.org/t/ds18b20-only-one-or-two-digits/15172 "2019-09-05T21:35:08Z")

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Hello, is it possible to get my temperature values with only one or two fractional digits? For example with a funktion node?

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## [\[ANSWER\] How to package up node-red applications](https://discourse.nodered.org/t/answer-how-to-package-up-node-red-applications/15174)

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**Author:** [@JoeFinn](https://discourse.nodered.org/u/JoeFinn)\
**Replies:** 0\
**Last updated:** [5 September 2019 20:47 UTC](https://discourse.nodered.org/t/answer-how-to-package-up-node-red-applications/15174 "2019-09-05T20:47:02Z")

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Thanks to @dceejay and @hardillb on the node-red slack who helped me with how to deliver node-red apps. SCENARIO: I want to package up node.js + node-red + some flows + maybe some custom nodes, create an installer (exec…

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## [Exec and daemon nodes break up a data stream](https://discourse.nodered.org/t/exec-and-daemon-nodes-break-up-a-data-stream/10695)

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**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 70\
**Last updated:** [5 September 2019 17:37 UTC](https://discourse.nodered.org/t/exec-and-daemon-nodes-break-up-a-data-stream/10695 "2019-09-05T17:37:51Z")

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I am trying to use a software-defined radio receiver to get data from a wireless thermometer. The program that controls the radio sends a stream of JSON strings separated by newline characters to its standard output. (Al…

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## [Error connecting to mongodb](https://discourse.nodered.org/t/error-connecting-to-mongodb/15127)

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**Author:** [@rickirea](https://discourse.nodered.org/u/rickirea)\
**Replies:** 6\
**Last updated:** [5 September 2019 14:39 UTC](https://discourse.nodered.org/t/error-connecting-to-mongodb/15127 "2019-09-05T14:39:54Z")

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when i configure a mongo node it shows the error as "MongoError: failed to connect to server \[127.0.0.1:27017\] on first connect \[MongoError: connect ECONNREFUSED 127.0.0.1:27017\]" I cannot connect to MongoDB to store …

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## [Always show Group Nodes among each other](https://discourse.nodered.org/t/always-show-group-nodes-among-each-other/15154)

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**Author:** [@Jochen1980](https://discourse.nodered.org/u/Jochen1980)\
**Replies:** 1\
**Last updated:** [5 September 2019 14:25 UTC](https://discourse.nodered.org/t/always-show-group-nodes-among-each-other/15154 "2019-09-05T14:25:20Z")

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Hi, one more question for today: Is it possible to always have group nodes on one tab among each other? E.g.: 3 group nodes will be displayed among each other on a smartphone but on a tablet or PC they will be diplaye…

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## [Waiting for missing types to be registered: google-iot-core-broker and google-iot-core in](https://discourse.nodered.org/t/waiting-for-missing-types-to-be-registered-google-iot-core-broker-and-google-iot-core-in/15083)

<div class="topic-metadata">

**Author:** [@mikel.garmendia](https://discourse.nodered.org/u/mikel.garmendia)\
**Replies:** 7\
**Last updated:** [5 September 2019 14:15 UTC](https://discourse.nodered.org/t/waiting-for-missing-types-to-be-registered-google-iot-core-broker-and-google-iot-core-in/15083 "2019-09-05T14:15:09Z")

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Hello, I want to use google-iot-core package in a Raspberry Pi, but I'm receiving this error: \[node-red-contrib-google-iot-core/google-iot-core\] TypeError \[ERR\_INVALID\_ARG\_TYPE\]: The "superCtor.prototype" property must…

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## [Unable to install node-red-cf-ready](https://discourse.nodered.org/t/unable-to-install-node-red-cf-ready/15155)

<div class="topic-metadata">

**Author:** [@alboino](https://discourse.nodered.org/u/alboino)\
**Replies:** 4\
**Last updated:** [5 September 2019 13:48 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-cf-ready/15155 "2019-09-05T13:48:58Z")

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Hi all, I'm trying to install an application that allows the use of node-red in any cloud foundry istance. The project is available at the following link: When I put the command: cf push node-red-cf-exprivia I see …

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## [Exporting data from ds18b20](https://discourse.nodered.org/t/exporting-data-from-ds18b20/15146)

<div class="topic-metadata">

**Author:** [@RudiRuessel](https://discourse.nodered.org/u/RudiRuessel)\
**Replies:** 19\
**Last updated:** [5 September 2019 13:03 UTC](https://discourse.nodered.org/t/exporting-data-from-ds18b20/15146 "2019-09-05T13:03:02Z")

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Hello, i have two ds18b20 sensors and want to export the data of my two temperature curves so i can put them into excel for example. Is that possible?

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## [How to send multiple values in node-red](https://discourse.nodered.org/t/how-to-send-multiple-values-in-node-red/13889)

<div class="topic-metadata">

**Author:** [@adamf](https://discourse.nodered.org/u/adamf)\
**Replies:** 29\
**Last updated:** [5 September 2019 11:31 UTC](https://discourse.nodered.org/t/how-to-send-multiple-values-in-node-red/13889 "2019-09-05T11:31:47Z")

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Hi, I am a noob in this. I am working with wireless Vibration and temperature sensor. I want to send an email alert of vibration and temperature. I have created a function node to send a single value. it's working. b…

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## [Problem accessing external website](https://discourse.nodered.org/t/problem-accessing-external-website/14905)

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**Author:** [@menno](https://discourse.nodered.org/u/menno)\
**Replies:** 6\
**Last updated:** [5 September 2019 10:54 UTC](https://discourse.nodered.org/t/problem-accessing-external-website/14905 "2019-09-05T10:54:09Z")

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Hi guys, i have a website that is accessable from the internet https://myuser:mypassword@www.XXXXXXX.nl/ws2/Reports-bad.htm this works great !! but if i running this config it still gets this message msg.payload : a…

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## [nanoCUL with MBUS, Node-red](https://discourse.nodered.org/t/nanocul-with-mbus-node-red/15140)

<div class="topic-metadata">

**Author:** [@krishnavamsi692](https://discourse.nodered.org/u/krishnavamsi692)\
**Replies:** 2\
**Last updated:** [5 September 2019 09:41 UTC](https://discourse.nodered.org/t/nanocul-with-mbus-node-red/15140 "2019-09-05T09:41:50Z")

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Hi All: i need to use node-red with nanoCUL and MBUS. I am able to connect nanoCUL With node-red after connecting i am able to see the message nanoCUL Is connected. Please let me know whether nanoCUL will support No…

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## [Hide/Show Flows](https://discourse.nodered.org/t/hide-show-flows/15143)

<div class="topic-metadata">

**Author:** [@rwiest](https://discourse.nodered.org/u/rwiest)\
**Replies:** 1\
**Last updated:** [5 September 2019 09:55 UTC](https://discourse.nodered.org/t/hide-show-flows/15143 "2019-09-05T09:55:57Z")

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Hi, I'm using dashboard-login to control user access to my dash. I defined two user groups and am controlling as follows. However, if I login to the system with the admin user, for example, even putting hide in a specifi…

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## [Requesting help with how to get the new NR dashboard working](https://discourse.nodered.org/t/requesting-help-with-how-to-get-the-new-nr-dashboard-working/15136)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 9\
**Last updated:** [5 September 2019 09:49 UTC](https://discourse.nodered.org/t/requesting-help-with-how-to-get-the-new-nr-dashboard-working/15136 "2019-09-05T09:49:42Z")

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One of my machines has been updated to a newer version of NR. This is what I know: pi@PIFACE:~/.node-red $ node -v v10.16.3 pi@PIFACE:~/.node-red $ npm -v 6.9.0 pi@PIFACE:~/.node-red $ On the web page it is 0.20.7 wi…

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