JavaScript code problem!

[Denis_Praskov]

I try to run the code, but it gives an error. I don’t understand what’s going on. The input value is correct.

[Niklas_Hatje]

Hey @Denis_Praskov, welcome to the community! n8n expects return values always to be in the following format:

{
  "json": {"key": "value"}
}

So in your case it would expect

return {"json": {"lastBalance": str}}

You can read more on the data format here. Hope that helps

[Denis_Praskov]

@Niklas_Hatje

return {"json": {"lastBalance": str}}

Thank you very much, you really helped me out