Trigger Icicles to drop

Hi ,
I have a 2.5D platformer and im trying to make icicles drop when the player runs in front of them.

How would I go about doing this? I know you have to use :

  // Destroy everything that enters the trigger
        function OnTriggerEnter (other : Collider) {
            Destroy(other.gameObject);
        }

I’m not good at scripting by the way :3

http://unity3d.com/learn/tutorials/modules/beginner/physics/rigidbody