# Number as a variable

**URL:** https://discourse.nodered.org/t/number-as-a-variable/48524
**Category:** General
**Created:** [17 July 2021 12:55 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524 "2021-07-17T12:55:43Z")
**Posts on this page:** 10
**Page:** 1

<div class="post-metadata">

### Author: ![Dosepower](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dosepower](https://discourse.nodered.org/u/Dosepower)
#### Post date: [17 July 2021 12:55 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/1 "2021-07-17T12:55:43Z")

</div>

Hey i want that the number (8000) is a variable that i can load from a stored variable called (msg.Netz)

```auto
msg.payload = {"current":8000}
return msg;

```

---

<div class="post-metadata">

### Author: ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [17 July 2021 12:58 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/2 "2021-07-17T12:58:29Z")

</div>

Is this what you mean?

```auto
msg.payload = {"current": msg.Netz}
return msg;

```

---

<div class="post-metadata">

### Author: ![Dosepower](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dosepower](https://discourse.nodered.org/u/Dosepower)
#### Post date: [17 July 2021 13:00 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/3 "2021-07-17T13:00:05Z")

</div>

thanks bro im so stupid is working

---

<div class="post-metadata">

### Author: ![Dosepower](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dosepower](https://discourse.nodered.org/u/Dosepower)
#### Post date: [17 July 2021 13:35 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/4 "2021-07-17T13:35:28Z")

</div>

how can i save a variable and load it on a other flow

```auto
var math1 = Number(msg.payload[2].col3) * Number(msg.payload[2].col6) / Number(100) + Number(msg.payload[2].col4) * Number(msg.payload[2].col7) / Number(100) 
+ Number(msg.payload[2].col5) * Number(msg.payload[2].col8) / Number(100);
msg.Netz = math1;
return msg;

```

```auto
msg.Netz= Math.round(var.math1 / 230 * 1000)
msg.payload = {"current": msg.Netz}
return msg;

```

how can i load math1 into the second code

---

<div class="post-metadata">

### Author: ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [17 July 2021 13:43 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/5 "2021-07-17T13:43:59Z")

</div>

Since you assign `math1` to `msg.Netz` it will be available in the next function in `msg.Netz`

So in 2nd function...  
`msg.Netz= Math.round(msg.Netz / 230 * 1000)`

---

<div class="post-metadata">

### Author: ![Dosepower](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dosepower](https://discourse.nodered.org/u/Dosepower)
#### Post date: [17 July 2021 14:18 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/6 "2021-07-17T14:18:51Z")

</div>

im getting Netz: NaN

---

<div class="post-metadata">

### Author: ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [17 July 2021 14:31 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/7 "2021-07-17T14:31:26Z")

</div>

Feed the input and output of each node into debug nodes. Give them names so you can see where it goes wrong. If you want to see `msg.Netz` then you will have to set that debug node to show Complete Message.

---

<div class="post-metadata">

### Author: ![Dosepower](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dosepower](https://discourse.nodered.org/u/Dosepower)
#### Post date: [17 July 2021 14:59 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/8 "2021-07-17T14:59:17Z")

</div>

> [@Colin](#):
>
> the input and output of each node into debug nodes. Give t

```auto
[{"id":"8587e399.4eec2","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"82f9aae9.4b5008","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":740,"y":80,"wires":[]},{"id":"1b7c69d8.2eee96","type":"inject","z":"8587e399.4eec2","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":130,"y":80,"wires":[["a8ecac09.1c037"]]},{"id":"a8ecac09.1c037","type":"http request","z":"8587e399.4eec2","name":"","method":"GET","ret":"txt","paytoqs":"ignore","url":"http://192.168.178.10/cgi/ems_data.xml","tls":"","persist":false,"proxy":"","authType":"","x":310,"y":80,"wires":[["421abbd6.d74814"]]},{"id":"421abbd6.d74814","type":"xml","z":"8587e399.4eec2","name":"","property":"payload","attr":"","chr":"","x":510,"y":80,"wires":[["82f9aae9.4b5008"]]},{"id":"c102206e.80227","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":380,"y":320,"wires":[]},{"id":"6f8b5bf0.1fd754","type":"inject","z":"8587e399.4eec2","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":130,"y":140,"wires":[["23dd931b.85a1ec"]]},{"id":"23dd931b.85a1ec","type":"http request","z":"8587e399.4eec2","name":"","method":"GET","ret":"txt","paytoqs":"ignore","url":"http://192.168.178.10/cgi/ems_data.js","tls":"","persist":false,"proxy":"","authType":"","x":130,"y":200,"wires":[["c4841e3f.db645"]]},{"id":"c4841e3f.db645","type":"csv","z":"8587e399.4eec2","name":"","sep":",","hdrin":"","hdrout":"none","multi":"mult","ret":"\\n","temp":"","skip":"0","strings":false,"include_empty_strings":false,"include_null_values":false,"x":130,"y":260,"wires":[["c102206e.80227","164d0d8.65491f3","d18a952c.b87eb8","d591f53c.0bbe98","7f50324e.f4f74c"]]},{"id":"164d0d8.65491f3","type":"function","z":"8587e399.4eec2","name":"Netz Bezug / Einspeisung","func":"var math1 = Number(msg.payload[2].col3) * Number(msg.payload[2].col6) / Number(100) + Number(msg.payload[2].col4) * Number(msg.payload[2].col7) / Number(100) \n+ Number(msg.payload[2].col5) * Number(msg.payload[2].col8) / Number(100);\nmsg.Netz = math1;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":410,"y":180,"wires":[["98bfa975.52df78"]]},{"id":"98bfa975.52df78","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"Netz","targetType":"msg","statusVal":"","statusType":"auto","x":630,"y":180,"wires":[]},{"id":"d18a952c.b87eb8","type":"function","z":"8587e399.4eec2","name":"Produktionsleistung","func":"var math = Number(msg.payload[2].col3) * Number(msg.payload[2].col15) / Number(100) + Number(msg.payload[2].col4) * Number(msg.payload[2].col16) / Number(100) \n+ Number(msg.payload[2].col5) * Number(msg.payload[2].col17) / Number(100);\nmsg.Produktionsleistung = math;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":390,"y":140,"wires":[["888952da.6e599"]]},{"id":"888952da.6e599","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"Produktionsleistung","targetType":"msg","statusVal":"","statusType":"auto","x":680,"y":140,"wires":[]},{"id":"d591f53c.0bbe98","type":"function","z":"8587e399.4eec2","name":"Laden / Entladen","func":"var math = Number(msg.payload[1].col12) * Number(msg.payload[1].col15) / Number(100) + Number(msg.payload[1].col13) * Number(msg.payload[1].col16) / Number(100) \n+ Number(msg.payload[1].col14) * Number(msg.payload[1].col17) / Number(100);\nmsg.Batterie = math;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":390,"y":220,"wires":[["efcb00d4.2a18c"]]},{"id":"efcb00d4.2a18c","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"Batterie","targetType":"msg","statusVal":"","statusType":"auto","x":640,"y":220,"wires":[]},{"id":"7f50324e.f4f74c","type":"function","z":"8587e399.4eec2","name":"Energieverbrauch","func":"var math = (Number(msg.payload[2].col3) * Number(msg.payload[2].col15) / Number(100) + Number(msg.payload[2].col4) * Number(msg.payload[2].col16) / Number(100) \n+ Number(msg.payload[2].col5) * Number(msg.payload[2].col17) / Number(100)) - (Number(msg.payload[1].col12) * Number(msg.payload[1].col15) / Number(100) + Number(msg.payload[1].col13) * Number(msg.payload[1].col16) / Number(100) \n+ Number(msg.payload[1].col14) * Number(msg.payload[1].col17) / Number(100)) - (Number(msg.payload[2].col3) * Number(msg.payload[2].col6) / Number(100) + Number(msg.payload[2].col4) * Number(msg.payload[2].col7) / Number(100) \n+ Number(msg.payload[2].col5) * Number(msg.payload[2].col8) / Number(100));\nmsg.Energieverbrauch = math;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":390,"y":260,"wires":[["f2ad70e0.286c2"]]},{"id":"f2ad70e0.286c2","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":true,"tostatus":false,"complete":"Energieverbrauch","targetType":"msg","statusVal":"","statusType":"auto","x":670,"y":260,"wires":[]},{"id":"2eaacfef.e05aa","type":"http request","z":"8587e399.4eec2","name":"","method":"POST","ret":"obj","paytoqs":"ignore","url":"http://192.168.178.56/evse/current_limit","tls":"","persist":false,"proxy":"","authType":"","x":650,"y":400,"wires":[["4def35b7.116dac"]]},{"id":"4def35b7.116dac","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":830,"y":400,"wires":[]},{"id":"917dca45.ee7ee8","type":"function","z":"8587e399.4eec2","name":"","func":"msg.Netz= Math.round(msg.Netz / 230 * 1000)\nmsg.payload = {\"current\": msg.Netz}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":380,"y":400,"wires":[["2eaacfef.e05aa","bd9edfac.b2147"]]},{"id":"9d591701.9a7a58","type":"inject","z":"8587e399.4eec2","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":140,"y":400,"wires":[["917dca45.ee7ee8"]]},{"id":"bd9edfac.b2147","type":"debug","z":"8587e399.4eec2","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":630,"y":460,"wires":[]}]

```

---

<div class="post-metadata">

### Author: ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [17 July 2021 15:01 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/9 "2021-07-17T15:01:42Z")

</div>

You need to look at the output of the debug nodes in the debug pane and see if they make sense. If you don't understand what I mean then I recommend watching this playlist: [Node-RED Essentials](https://www.youtube.com/playlist?list=PLyNBB9VCLmo1hyO-4fIZ08gqFcXBkHy-6). The videos are done by the developers of node-red. They're nice & short and to the point. You will understand a whole lot more in about 1 hour. A small investment for a lot of gain.

---

<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)
#### Post date: [15 September 2021 15:01 UTC](https://discourse.nodered.org/t/number-as-a-variable/48524/10 "2021-09-15T15:01:58Z")

</div>

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.