Fetch the Instance ID of the pinned object and change the animation?

Hello, Is there a way in which we can get the IID of pinned object?

Let's say an object B is pinned to object A. Whenever the player collides / overlaps with object A, I want to fetch the IID of object B and set a different animation for object B.

Right now with what I have implemented, if I change the animation for one of the instance of the object, it changes for all of the instances of that object.