How do I Pick Instance By Collision

Hi! Is there a way to pick instance by colliding with them, I'm trying to make a door mechanic and I want it that when I get into a specific zone I press a button and transition to another area. The problem is though that I don't know how to distinguish between instances, when I use the collide function it picks all instances of the object, and I don't want that.

Can someone please explain how this can be done?

Collide should automatically pick the right object, unless you are trying to pick another object than the one you are colliding with, but then it has nothing to do with picking the object by collision..

Could you make a screenshot of your events, so we can see where things go wrong?

Try this tutorial

https://www.scirra.com/tutorials/806/instance-variable

Thank you Lordshiva, that was exactly what I was looking for.

eliasfrost most welcome happy to help