How do I only effect one group of objects at a time?

Hi. I'm working on a Sokoban style game and I'm having trouble with object interactions.

Problem: When player is next to a stack of boxes only the boxes the player is next to should begin to float, but instead all of the boxes in the room float.

Here's an example file:

https://www.dropbox.com/scl/fi/l5ke58u1fi423j5vjhklr/PushBlockTest02.c3p?rlkey=r6r6tca7uwynhw6xq5xb3c0qd&st=nc1iy23x&dl=0

Hello.

Look, you chose by overlaying the “PushBlockDetect” sprite, and that's not a bad start. Construct3 understands which one to choose.

But then it gets worse. You want to perform actions on the “StackBox01” and ‘StackBox02’ objects. And you want to use the coordinates of the “PushBlock” object. But the game engine doesn't know which sprite to choose because you haven't selected one.

You've pinned all these objects to the hierarchy, so we can select through it.

file *.c3p fex.net/s/stkxkon

I like how you marked in different colors to show me the logic. You're awesome. Thank you!