How do I start an action with a objects with different UIDs?

Hey, I would like to know how to trigger an action with 2 or more instances of the same object, that will destroy 2 instances of another object.

So far, I thought it would work like this:

Thing Pick instance with UID 001

Thing Pick instance with UID 002

Thing is True

Stuff Pick Instance with UID 03 -> Destroy Stuff

Stuff Pick Instance with UID 04 -> Destroy Stuff

Any tips?

So you need pick 2 instances of Thing, check if some boolean instance variable is true for both of them, and then destroy 2 instances of Stuff?

You can do this:

System pick Thing by evaluating ((Thing.UID=1 | Thing.UID=2)  & Thing.someBoolean=1)
          Stuff Pick Instance with UID 03 -> Destroy Stuff
          Stuff Pick Instance with UID 04 -> Destroy Stuff 
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It's a bad habit to use fixed values for UIDs in your code, you should use instance variable "ID" instead.