How do I change collision mask in the physics behavior

Hey!

I'm currently making a game where the player can change his shape. One of them is a ball. I would like to know how i could make it so when the player is playing the "ball" animation, thc collision mask to circle instead of collision polygon, and switch it back when playing another animation.

Thanks

I don't think you can directly, but nothing is stopping you from spawning a ballobject set to circle collision looking like the player when he is a ball, replacing it again when changing shape..