Toggle Visibillity of checkpoint one after another

Hi i am trying to connect one actor to another so when i pass one actor the other one spawns. I just can’t simply figure it out. I would appreciate any help. I have done all this in the open level blueprint.

Some of the things in your blueprint don’t really make much sence, can you tell me exactly what you’re looking for?

To make the checkpoint disappear once passed through i simply added destroy actor at the end of it.