How do I select all instances?

I've used the System action "Pick nth instance" to solve my enemy collision bug, but I can't figure out the expression to select all instances for the action. I really don't want to make 100 separate events for all the different instances of the enemies.

Thanks.

I think if you don't use any picking conditions and For Each, C2 automatically selects all instances

edit:

actually, if you use for each, it will still select all instances, but it also gives you (optionally) to choose to make each instance act independently from each other. So using For Each is ok (for your situation).

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