Collide with one instance, modify a different instance (of the same object)

I have a file that is basically a maze created by many instances of the same object (maze wall) - on collision with instance 1 (i.e. wall 1), I want to change the X and Y location of wall 2. Again both are instances of the same object. Any suggestions?

Right now I have a system event that:

Checks for collision --> then identifies the instance by instance variable, but I need to know the action for making the other instance to be effected?

I can make the colliding instance change easily but I want to change a different instance. To clarify, I am colliding with an instance that has the instance variable "1", and when my player collides with this instance (1), I want to change the location of instance with instance variable "2"... (hmmm, I hope that makes sense)

You need to do a Pick all (sub event) and then pick your var=2 object.

SOLUTION (Thank you for your assistance!!!)

It was simpler than what I was attempting... Here is a screenshot of the solution:

ovadeus.com/construct/pick_instance_solution.jpg