Conditions without own function

How can I set up a trigger to spawn another trigger that uses a local variable generated in the parent in the condition of the child trigger. Here is the sadly unworking version of what I want:

What you wanted to do would never work, as the function condition takes type code, which is a function name. Right now, I don't know any other solution than storing the unit to some global var (you can use existing blizzard.j globals for that).