How do I create a sword slashing attack?

I can animate it, but i dont know how to make the attack

You can make a Sprite that will be like the "Hitbox" , this sprite will be Pinned to the character and when you press the attack button you can have in event sheet something like.

When button [Right click] is pressed

Play attack animation for "Player"

If "Hitbox" is overlaping "Enemy"

Subtract 50 on IntEnemyHealth