auto selection between editors(blueprints)

im currently trying to follow som tutorials but they seem to be out of date a little. Im trying to toggle on lights after a collision using trigger box, but even when i select it in the level editor and then right click in the blueprint editor i cant get the node onActorBeginOverlap. i get a beginActorOverlap node but this is not looking at the collisions with the triggervolume. video tutorials are for 4.1 and im using engine 4.8 so alot has changed but i still cant figure it out.