VR Action Mapping: Branch does only get the default value of bool variable

(Sorry for my english!) I tried to do an InputAction in my Blueprint. But every time i press the b button on my controller, it prints “scannable is false” even its true after a ActorBeginOverlap with BP_Motion_Controller. It’s like Schrödingers Variable, lel. If i change the Default to true, it allways prints “start scan”/“cancel scan”. I also tried to print the value of Scannable every tick. It’s false by default. If I point to my object with my ray at my VR Hands, ActorBeginOverlap will be triggered, then its true until i cancel pointing on the object. Pls help.