How do I add a child sprite to a parent using the child's UID?

I'm creating a number of sprites that all need to be children of a single parent sprite.

The "Add Child" function lets me set an *object* as a child, but not the *UID of that object*.

Is there a way to programmatically set the parent of a child sprite that I'm missing?

When I create the child sprite, I actually know the UID of the sprite I want to be its parent. But when I "Pick instance with UID" X (where X is the parent sprite's UID), I can't add the child sprite to its parent.

This is what I have:

... which comes during a loop where I'm creating the child sprites. "builtstructures.controllingstructureID" is the UID of the parent sprite.

Any suggestions?

If you need to create a hierarchy relationship between two instances of the same object, you need to pick each instance separately. The easiest way to do this is with a family - pick one instance of the object and one instance of the family.

Pick Family with UID=1
Pick Sprite with UID=2
 Family add child Sprite

Pick FamilyA with UID=1
Pick FamilyB with UID=2
 FamilyA add child FamilyB