Hi this may sound like a very dumb question but I am trying to get the explosion to be made at the player location but only when the health reaches 0, here isi the script.

var explosion : GameObject;
var playerHealth = 100;
var damage = 10;

function OnCollisionEnter(collision : Collision)
{
    var contact : ContactPoint = collision.contacts[0];
    var rotation = Quaternion.FromToRotation(Vector3.up, contact.normal);
    var playerDead = Instantiate (explosion, contact.point, rotation);

   if(collision.gameObject.tag=="objectA" || collision.gameObject.tag=="objectB" || collision.gameObject.tag=="objectC") 
   {
        playerHealth -= damage;
   }
}

function Update()
{
    if(playerHealth <= 0)
    {
                //want to call the playerDead variable here if possible
       Destroy(gameObject);
    }
}

Thank you