Bullet not destroying on collision

for some reaon my bullets are not doing any damage, and i know they are hitting becaause i put a rigid body on my target and i can tell it gets hit here is my bullet code

function Start() { Destroy(gameObject, 5); } var dmg:float = 20;

 function OnTriggerEnter(hit:Collider){
 if(hit.tag == "Enemy"){
 hit.transform.SendMessage("Damage",dmg);
 }
 
 }

here is my ai code

var target : Transform; //the enemy's target var moveSpeed = 3; //move speed var rotationSpeed = 3; //speed of turning

var myTransform : Transform; //current transform data of this enemy

function Awake() { myTransform = transform; //cache transform data for easy access/preformance } function Update () { //rotate to look at the player myTransform.rotation = Quaternion.Slerp(myTransform.rotation, Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);

 //move towards the player
 myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
 }
 

var health:float = 1;

function Damage(dmg:float){ health -= dmg; } if(health <=0){ Destroy (gameObject); }