Heating flow . contrib heater controller

[Colin]

OK, so you want to test that and set the output accordingly. There are several ways of doing it but in a function node you just need something like

if (msg.payload.currentHeaterStatus === "0n") {
  msg.payload = true
} else {
  msg.payload = false
}
return msg

or you can write that in one line but a bit less clearly using

msg.payload = (msg.payload.currentHeaterStatus === "on")
return msg

or you do it in a Change node using a JSONata expression.