Overlapping same object type and checking variables?

Here's your first request. I'm still not sure this is actually what you want. If you look at the console, you see the green sprite that downsizes keeps getting downsized, since the conditions remain the same, even though the size has changed.

It's almost working, but I actually need the sprite moving right to change it's size to 50,50 not the one that's moving left.

And why does the sprite in the top left corner, This sprite:

Why does it have its size changed to 50,50? It should stay the same since it doesn't overlap a sprite with a powerup.

Sorry about all the questions guys!

It's just that getting the same object type overlap to work is extremely confusing for me since it doesn't work like a normal overlap between two different object types.

You have not provided enough detail to solve this. How is C2 supposed to know that you want the right-moving one to resize? The objects are the same. You need to specify something else to identify the correct object.