Problem with HitMaker?

Hello there , I'm having trouble with the HitMaker. Basically it works , but the variable "displayHits" isn't going true when I hit the enemy. Everything else works , as if I shoot the enemy it loose health. Any idea? :/

 var HitSound : GameObject;
 var HitHole : GameObject;
 var power : int;
 var HitParticleSpacing : float = 0.01;
 
 //HitMarker
 var HitMarker : Texture2D;
 var displayHits : boolean = false;
 
 function FixedUpdate ()
 {
 
 displayHits = false;
 
 }
 
 function Update () 
 {
 
 var fwd = transform.TransformDirection(Vector3.forward);
 var Hit : RaycastHit;
 
     if (Physics.Raycast(transform.position, transform.forward, Hit , Range))
     
        {
        
        if (HitParticle)
        
           {
           Instantiate(HitParticle, Hit.point + (Hit.normal * HitParticleSpacing), Quaternion.LookRotation(Hit.normal));
           }
           
        if (HitSound)
        
           {
           Instantiate(HitSound, Hit.point + (Hit.normal * HitParticleSpacing), Quaternion.LookRotation(Hit.normal));
           }
        }
        
        Destroy(gameObject);
        
        if (HitHole)
        
           {
           var  Hole = Instantiate(HitHole, Hit.point + (Hit.normal * HitParticleSpacing), Quaternion.LookRotation(Hit.normal));
           
           Hole.transform.parent = Hit.transform;
           
        if (Hit.rigidbody !=null)
      
                Hit.rigidbody.AddForceAtPosition(fwd * power, Hit.point);
         
           }
           
        if(Hit.rigidbody)
        {
        if(Hit.collider.gameObject.tag == "Enemy")
          {
             Hit.collider.SendMessageUpwards("ApplyDamage", Damage, SendMessageOptions.DontRequireReceiver);
             displayHits = true;
          }
          else 
          {
          displayHits = false;
          }
        } 
 }
 
 function OnGUI ()
 {
 
 if(displayHits == true)
 
 {
    GUI.Label(Rect(Screen.width/2 -32, Screen.height/2 -32, 200, 200), HitMarker);
 }
 
 }