How do I detect which object Mouse is Over if i have 3 objects stayed one by one

I have a 3 sprite in family, and when I use mouse is over on family mouse detect all object, but I want to over by highest sprites only.

construct.net/en/make-games/manuals/construct-3/plugin-reference/common-features/common-conditions

Pick top/bottom

Pick either the top-most or bottom-most instance, taking in to account layers and Z index. For example, the instance at the front of the top most layer is the top instance.

Thank you for your answer! I think I put it wrong, all the sprites in the family stand behind each other in one position but different sizes, and I need the one that is in the foreground. But when I squeal with my mouse, he highlights all the objects in the family. I've already tried changing the z axis, and it doesn't work for me.