public void takeDamage(float damage)
    {


        health -= damage;

        if (health <= 0 ) {
            Destroy(gameObject);
          }

-------------------------------------------------
private void OnTriggerStay(Collider other){
 if (other.CompareTag("Attack"))
        {
            if (dmg == null)
                dmg = StartCoroutine(setDamage(other));
}

 private void OnTriggerExit(Collider other){
 if (other.CompareTag("Attack"))
        {
            StopCoroutine(dmg);
            dmg = null;
}



IEnumerator setDamage(Collider other)
    {
        while(true)
        {
            //AttackMale = true;
           if (agent.enabled)
                other.transform.parent.GetComponent<PlayerHealth>().takeDamage(damage);
            yield return new WaitForSeconds(0.5f);
        }

    }