Unity Space Gravity

Ive created a code to attach to rigidbody objects and the player to disable gravity when they enter a collide area with IsTrigger marked, When i go to test it gravity remains the same the code for the player is

 function OnTriggerEnter (other : Collider) {
     if (other.CharacterController) {
         other.CharacterController.useGravity = false;
     }
 }

and the code to attach to the collider that is space is

 function OnTriggerEnter (other : Collider) {
     if (other.attachedRigidbody) {
         other.attachedRigidbody.useGravity = false;
     }
     if (other.CharacterController) {
         other.CharacterController.useGravity = false;
     }
 }

Your help would be greatly appreciated.