Number as a variable

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

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

Is this what you mean?

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

thanks bro im so stupid is working

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

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

how can i load math1 into the second code

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)

im getting Netz: NaN

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.

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(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":[]}]

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. 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.

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