Editing Volumetric Fog during runtime

VolumetricController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.HighDefinition;

public class VolumetricController : MonoBehaviour
{
    [Range(-1f, 1f)]
    public float anistropy;

    [Range(0, 1)]
    public float ambientLightProbedimmer = 1;

    Volume volume;
    Fog fog;

    void Start()
    {
        volume = GetComponent<Volume>();
        volume.profile.TryGet<Fog>(out fog);
    }

    void Update()
    {
        fog.anisotropy.value = anistropy;
        fog.globalLightProbeDimmer.value = ambientLightProbedimmer;
    }
}