How can I lose health when my enemy collides with the player?

Soo... I'm creating a simple game. The player has 10 health-points and the enemy 100 (dies on 6 hits). I want to make it so the player lose health every tick if the enemy is touching it. Just a simple collide thing.

Player code:

 var curHealth : int = 100;
 var maxHealth : int = 100;
 
 var healthtext : GUIText;
 
 
 
 function Start () {
 
 
 healthRegen();
 
 }
 
 
 
 
 
 function Update () {
 
 
 healthtext.text = curHealth + " / " + maxHealth;
 
 
 if(curHealth < 1 ) {
 
 curHealth = 10;
 
 Application.LoadLevel ("Death");
 
 
 
 
 }
 
 
 if(curHealth > 100) {
 
 
 curHealth = 100;
 
 
 }
 
 
 
 
 
 
 
 if(Input.GetKeyDown("e")) {
 
 curHealth -= 1;
 
 }
 
 if(Input.GetKeyDown("m")) {
 
 Application.LoadLevel ("MainMenu");
 
 }
 
 }
 
 // CODE THAT DOES NOT WORK! WHY?
 function OnCollisionEnter(collision : Collision){
 
     if(collision.CompareTag("Enemy")){
 
         //Reduce global health var
         curHealth -= 1;
 
     }
 
 }
 
 
 
 
 function healthRegen () {
 
 
 for(i=1;i>0;i++) {
 
 
 
 yield WaitForSeconds(2.5);
 
 if(curHealth < maxHealth) {
 
 curHealth++;
 
 }
 
 
 }
 
 
 }

Enemy Code:

 var Distance;
 var Target : Transform;
 var lookAtDistance = 25.0;
 var chaseRange = 15.0;
 var attackRange = 1.5;
 var moveSpeed = 5.0;
 var Damping = 6.0;
 var attackRepeatTime = 1;
 
 private var attackTime : float;
 
 var controller : CharacterController;
 var gravity : float = 20.0;
 private var MoveDirection : Vector3 = Vector3.zero;
 
 function Start ()
 {
     attackTime = Time.time;
 }
 
 function Update ()
 {
     Distance = Vector3.Distance(Target.position, transform.position);
     
     if (Distance < lookAtDistance)
     {
         lookAt();
     }
     
     if (Distance > lookAtDistance)
     {
         renderer.material.color = Color.green;
     }
     
     if (Distance < attackRange)
     {
         attack();
     }
     else if (Distance < chaseRange)
     {
         chase ();
     }
 }
 
 function lookAt ()
 {
     renderer.material.color = Color.yellow;
     var rotation = Quaternion.LookRotation(Target.position - transform.position);
     transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * Damping);
 }
 
 function chase ()
 {
     renderer.material.color = Color.red;
     
     moveDirection = transform.forward;
     moveDirection *= moveSpeed;
     
     moveDirection.y -= gravity * Time.deltaTime;
     controller.Move(moveDirection * Time.deltaTime);
 }
 
 function attack ()
 {
     if (Time.time > attackTime)
     {
         Debug.Log("Basic");
         attackTime = Time.time + attackRepeatTime;
     }
 }
 
 function ApplyDammage ()
 {
     chaseRange += 5;
     moveSpeed += 0.013;
     lookAtDistance += 6;
 }

Please help :(