Duck And The Collision Shape

So ... my character has the ability to duck/crouch. The animation is in place and it looks beautiful. But I can't get the collision shape to follow the animation. So the duck move is useless because the enemy detects the 'normal' collision shape and not the small duck collision shape. Any thoughts brave boxers?

 

u need to change the collision shape size when you duck your character and reset it back when you leave that.
Simple

 

Yes, I used the Martian template to figured that out