Enemy is not destroying even health goes negative.I tryed debugging but

Unity Engine
1

if statement does not run i dont know why health goes neagtive.I had used A* ai for enemy.
When bullet hits enemy.enemy should deal damage.

public class EnemyHealth : MonoBehaviour
{
    public int HpZombie;
    public Slider hpbar_zombie;
    public Transform player;
    private Rigidbody2D rb;
    bool shouldend;
    // Start is called before the first frame update
    void Start()
    {
       rb = this.GetComponent<Rigidbody2D>();
        player = GameObject.FindGameObjectWithTag("Player").transform.GetComponent<Transform>();
    }

    // Update is called once per frame
    void Update()
    {
      
     
      
        if (hpbar_zombie == null)
        {
            return;
        }

       
        Vector3 direction = player.position - transform.position;
        float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg-90f;
        rb.rotation = angle;

        if (HpZombie == 0)
        {
           //debug.log("hit") even this not works
            Destroy(this.gameObject);
        }
    }
}
2

Their health probably isn’t hitting exactly 0. Try <= instead of ==.