Hurting enemy when attacking status is equal to true and player is colliding with enemy object.

Hi, I am trying to make a game where you can stab a enemy with a knife, the problem is that I don't know how to check if the enemy collides with the player while a attack boolean is set to true, then it will set the health of the enemy to -= 5 every time. Does anyone know how to do this?

Here's the player srcipt:

 static var IsAttacking = false;
 var TimeD : float = 1;
 
 
 
 
 function Update () {
 
  IsAttacking = true;
 yield WaitForSeconds(TimeD);
  IsAttacking = false;
 }

Here's the enemy script:

 var Health : float = 100;
 var Self : GameObject;
 
 
 function OnTriggerEnter () {
    
           if(PlayerScript.IsAttacking == true){
           
             Health -=5;
           
             if(Health == 0){
           
               Destroy (Self);
           
           
               }
           }
           
          
           //Nothing
           
           
           
         }