yichael_smartbow/Assets/BowArrow/Scenes/GameChallengeScene/FogCameraToggle.cs

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

public class FogCameraToggle : MonoBehaviour
{
    static bool isOn = true;
    DayToNight dayToNight;
    Toggle toggle;
    void Start()
    {   
        dayToNight = this.transform.GetComponentInParent<DayToNight>();
        toggle = this.transform.GetComponent<Toggle>();
        toggle.onValueChanged.AddListener(delegate(bool value) {
            isOn = value;
            dayToNight.SetFogCamera(isOn);
        });
        toggle.isOn = isOn;
    }
}