my sccripts/Health.js(26,26): BCE0019: 'Damage' is not a member of 'Bullet'.

i don’t why but i get a my “sccripts/Health.js(26,26): BCE0019: ‘Damage’ is not a member of ‘Bullet’.” here is my script

#pragma strict

var Health : int = 100;
var damage : int ;
var bullet : GameObject;
function Update () 
{
   if(Health < 0)
   {
     DIE();
   }
}

function OnTriggerEnter (hit : Collider ) 
{
   if(hit.gameObject.tag == "Bullet")
   {
      bullet = hit.gameObject;
      TakeDamage ();
   }
}

function TakeDamage ()
{
   var BulletScript : Bullet =  bullet.GetComponent("Bullet");
   damage = BulletScript.Damage;
   
   Health -= damage;
}
function DIE ()
{
  Debug.Log("I'm death");
  Destroy(gameObject);
}

please help me i don’t even understand the error =(

BulletScript has to have a public variable called Damage.