node-red ReferenceError: la is not defined (line 1, col 8)

Question

How can i send variables form function to function

Answer 1

The input message to a function node is always called msg (no matter what you may have called it in a previous function node).

So in the example you have given to access the payload of the incoming message in the second function node you would just use msg.payload. (so in this example the second function node is redundant, but I expect you are actually doing more than is shown)