How to change the collision layer of a collisionshape

so i use the basic template for the carachterbody (player) and the collisions work perfectly, but i want it to interact the same with a Area2d (that has a collisionlayer in it) but for some reason it doesnt work with the carachterbody. And i think the problem has to do with the collision layer, but i cant change the collision layer of a Area2d nor a Collisionshape.
any help is appreciated!

-Quinn Jusufi

You can’t change a collision layer of a CollisionShape2D, but you can change a collision layer of an Area2D as @rgb_dev1881 pointed.

oh, i guess ill try to find another solution.