how do i fix this script

my script is a enemy script so when the enemy collides with the player he dyes but when the enemy collides with the player he doesn't dye how do i fix this the script is:

 var target : Transform; //the enemy's target
 var moveSpeed = 3; //move speed
 var rotationSpeed = 3; //speed of turning
 var attackThreshold = 3; // distance within which to attack
 var chaseThreshold = 50; // distance within which to start chasing
 var giveUpThreshold = 50; // distance beyond which AI gives up
 var attackRepeatTime = 1; // delay between attacks when within range
 
 private var chasing = false;
 private var attackTime = 1;
 
 var myTransform : Transform; //current transform data of this enemy
 
 function Awake()
 {
     myTransform = transform; //cache transform data for easy access/preformance
 }
 
 function Start()
 {
      target = GameObject.FindWithTag("Player").transform; //target the player
 }
 
 function Update () {
 
     // check distance to target every frame:
     var distance = (target.position - myTransform.position).magnitude;
 
     if (chasing) {
 
         //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;
 
         // give up, if too far away from target:
         if (distance > giveUpThreshold) {
             chasing = false;
         }
 
         // attack, if close enough, and if time is OK:
         if (distance < attackThreshold && Time.time > attackTime) {
             // Attack! (call whatever attack function you like here)
             }
             attackTime = Time.time+ attackRepeatTime;
         }
 
       else {
         // not currently chasing.
 
         // start chasing if target comes close enough
         if (distance < chaseThreshold) {
             chasing = true;
         }
     }
 }

and the player script is:strong text

var maximumhitPoints = 100; var playerhitpoints= 100; var isDead = false;

function ApplyDamage (damage:float) { if (playerhitpoints < 0) return;

//apply damage playerhitpoints --;

if (playerhitpoints <= 0) { Die(); } }

function OnGUI() { if (isDead) { GUI.Box(Rect(10, 10, 150, 100), "You're dead"); if(GUI.Button(Rect(5, 5, 15, 10), "Click here")) { isDead = false; } } }

function Die() { if(playerhitpoints <= 0) isDead=true; }