Could you do that grazer? Make it where we can hook up stuff to outside items? AKA, make it where we can plug up stuff to activate in another item. An example: I want to hook up this collision to my character. But, the collision is in another item. Therefore, I can’t plug it in into my character’s effect! Could you fix that?
If I understand your question correctly, you can use a message and mailbox. Have the external object send a message to your character, then add a mailbox trigger to your character assigned to that message.
For example, if you want to have a door explode when you press a button, have button send a message called “open” or whatever to [door], then in the door behaviors have a mailbox called “open” and there you go, a link.