Easy explosion script

Here’s the script:

var explosion : GameObject;
function OnCollisionEnter (collision : Collision) 
	Instantiate (explosion, transform.position, transform.rotation);
	Destroy (gameObject);

But it says that the referenced behaviour is missing. I set the explosion, I gave everything rigidbodies, but it still doesn’t work.

[Edit] It looks like Detonator doesn’t work.

Try add the gameobject Explosion in the variable