s7-Out, send a Boolean "false"

[BurgerMirco]

Hello, I am trying to control a booean variable via node S7. The variable lies in a DB and configured correctly.

When I send the message "msg.payload = true", the variable in the PLC is also set to true.

My problem is the other direction, when I send "msg.payload = false", the variable is unfortunately NOT set back :-(

Am I doing something wrong, or can someone tell me what it is?

[nrbrt]

You seem to send a string "false" instead of a Boolean FALSE. Any string will be seen as TRUE when sent to a Boolean input