basically Tried to make own attack function and not getting health returning where function called from.

below you can see my code i have wrote .

 public static float doAttack(float attackPower, float healthPool)
     {
         Debug.Log("this is working but not not taking health off????");
         healthPool -= attackPower * Time.deltaTime;
         //health -= 500 * Time.deltaTime;
         return (healthPool);
     }

and here is where i call it from.

  void OnTriggerEnter2D(Collider2D other)
     {
         attack.doAttack(attackForce, health);
         
 
     }

as you can I pass in my variable but dont seem to get the return since the health doesnt decrease can anyone put out where i am going wrong.