How to turn on/off spotlight with with a widgets button?

Hi there UE experts!

How to turn on/off spotlight with with a widgets button? So it acts like a light switch.

I can’t get the blue print working, I seem to be not understanding the blueprints logic.
What I did: I made a BP with a spot light in it and then create a variable , then place it in the widgit blueprint.

Any tip would help!
Thank You