How do I spawn one object above another (but without image point)?

I need to spawn one object above another one without using image point.

I tried object.X + pixels but it didn't work. (maybe I'm doing it wrong?)

Check the condition whether it trigger correctly. Try tracking objects in debugger to make sure their existence.

The problem is: I have a family of objects and need to spawn another object (sprite) ONLY above them. I don't want to create top image point for all of the objects, so I'm trying to figure out if there any other solid way to do that.

Probably you want to use create object command rather than using spawn command which is more flexible.