Unity 2D

private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Enemy"  && attackPos.gameObject.activeSelf == true)
        {
            Debug.Log("This will do " + enemy.name);
            //collision.otherCollider(EnemyScript.GetComponent<Rigidbody2D>());

            if (facingRight == true)
            {
                enemy.GetComponent<Rigidbody2D>().AddForce(transform.up * 500 + transform.right * 500);
            }
            else if (facingRight == false)
            {
                enemy.GetComponent<Rigidbody2D>().AddForce(transform.up * 500 + (transform.right * 500) * -1);
            }
        }
    }