How do I Let an enemy (top down) attack?

I have a zombie that can follow the player but can't attack him.

Can somebody help me ?

Pin an invisible helper sprite to the zombie, slightly larger than the zombie itself. When player collides with or overlaps the helper sprite, do attack.

Pin an invisible helper sprite to the zombie, slightly larger than the zombie itself. When player collides with or overlaps the helper sprite, do attack.

Thanks it worked