LayerMask play

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

public class CamCullingMaskController : MonoBehaviour
{
    [SerializeField] List<string> layerName;
    [SerializeField] Camera camCustomCullingMask;
    [SerializeField] GameObject objToHide;

    private int objLayer;

    void Start()
    {
        objLayer = objToHide.layer;


        //Hide();
        //CustomCamLayerMask();
    }


    void Update()
    {
        if(Input.GetKeyDown(KeyCode.S))
            Toggle();

        print(objLayer);
    }

    // Turn on the bit using an OR operation:
    private void Show()
    {
        camCustomCullingMask.cullingMask |= 1 << LayerMask.NameToLayer("Water");
    }

    // Turn off the bit using an AND operation with the complement of the shifted int:
    private void Hide()
    {
        string objLayerName = LayerMask.LayerToName(objLayer);
        camCustomCullingMask.cullingMask &= ~(1 << LayerMask.NameToLayer(objLayerName));
    }

    // Toggle the bit using a XOR operation:
    private void Toggle()
    {
        camCustomCullingMask.cullingMask ^= 1 << LayerMask.NameToLayer("Water");
    }

    private void Hide2()
    {
        camCustomCullingMask.cullingMask = (1 << LayerMask.NameToLayer("Water"));
    }

    void CustomCamLayerMask()
    {
        camCustomCullingMask.cullingMask = (1 << LayerMask.NameToLayer("TransparentFX")) | (1 >> LayerMask.NameToLayer("UI")) |
            (1 >> LayerMask.NameToLayer("Water")) | (1 >> LayerMask.NameToLayer("Default"));
    }
}