Hellp int - a int not working

Questions & Answers
1

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class shock_wave_2 : MonoBehaviour {
    part_Hellth hp;
    [SerializeField]
    int hit_hp = 20;
    private void OnControllerColliderHit(ControllerColliderHit hit)
    {
        if (hit.gameObject.name == "part")
        {
            hp = hit.gameObject.GetComponent<part_Hellth>();
            hp.HP = hp.HP - hit_hp;
        }
    }
}

it gave me no Errors but part_Hellth.HP did not go dawn.

2

fixed i used private void OnControllerColliderHit(ControllerColliderHit hit) in stead of private void OnCollisionEnter(Collision hit)