Alarm system with remote off switch


I’m trying to set up an alarm that I can turn off with a switch at a different location.

I set up two separate blueprints:

1- the alarm itself


2- the switch


The alarm is set up to be turned off by a custom event , Shut off alarm which is then connected to the switch blueprint
with a key input command to turn off.

It’s not working though, I feel I’m missing something really basic somewhere.

Any ideas?