What do i need to do to touch the button (on mobile) and turn the lights on?

Hello guys!

I’m new here, but could someone tell me how I can use a button to change the light (on or off) on my cell phone? I got it on the Windows, using Blueprint level (by clicking with the mouse) but with the on click event, I couldn’t insert an actor from the widget! I hope you can help me

Best Regards,
Rodrigo Salomão from brazil

Screen of code in Blueprintlevel (click on mouse)

Screen of code in Widget (click on button)