How do I pick the sprite one the highest z index?

Hi

I have a situation where there are a couple of dragable sprites one over the other, each one has its own z Index.

I'm using the "Crusor is over (sprite name)" to resize the sprites, but as there are sprites one above the other, the Cursor is over all the sprites

is there a way to choose/pick only the sprite that is on the top?

(Hope I've made it clear)

Pick Top on the Z Order section on the bottom. Eyes open