Thanks for the reply Dan, I originally tried that as well. The part I can’t figure out is that I need both objects to start at the same size, say 200×200. The parent object scales up to 400×400 and the child object should only grow 75% of that, which is 350×350. As soon as I link everything together, the object that has the scale expression applied, shrinks down because it’s scale is now 75%. So if I rescale that object so that it starts at the same size, and scale the parent object, both objects stay the same size. Or if I attach the child object to the null with the expression, AFTER applying the expression, I have the same result. I will attach a file to show you what’s happening. I really appreciate the help