Using character controller insted of normal collider

hey everyone,

i am making small free kick game using kinect. i used openNI skeleton to control my character. i attached collider at feet to kick the ball(along with rigidbody and sphere collider) but when i kick the ball my foot goes through ball not colliding with foot.

so i use character controller to collide and it worked ..

but now i want to add force to ball while kicking.

here the script that i used but it's not working

---

 var speed: int = 5;
 function OnControllerColliderHit(hit:ControllerColliderHit){
 
         Debug.Log("we hit an object");
 
     if(hit.gameObject.tag == "ball"){
     
         Debug.Log("we hit an object");
         hit.rigidbody.AddForce(Vector3.forward * speed);
     }
 }

---

i tried this script on first person controller and it's working.

what m i missing here ??

i used sphere to add character controller, which are child of foot bone.

need help.

thanx regards.