How can I make two specific colliders cause an overlap event

Actually never mind, i found that changing cast shadows works but I had dynamic lighting set to off so it couldn’t ever switch it on through blueprints. It seems to be working now but only if I try and make reference on of the blueprints in the level. Is there a way to make it globally on all BP of that type?

http://i.imgur.com/8sBJnqz.png