Sprite collision


I know i’m asking a lot of questions, but, i’ve been trying this afternoon to start an action at the collision of a sprite and a cube but i haven’t figured it out.
So, i have my character that i control:

The problem is, the only thing that collide with an object is this capsule componement, the sprite itself has a collision box but it does nothing:

i can’t start any actions when this sprite collide with an other object, it just goes through the object until the capsule componement hits the object and finaly launch the action.

Anyone knows what i’m supposed to do?