rabidus-test/Assets/DissolveEffect.cs

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

public class DissolveEffect : MonoBehaviour
{
    public float Time;
    List<Renderer> _renderer = new List<Renderer>();

    public string Param = "_Dissolve";

    public float From = 0;
    public float To = 1;

    void Start()
    {
        _renderer.AddRange(GetComponentsInChildren<Renderer>());
    }

    private bool _action = false;

    [ContextMenu("Dissolve")]
    public void Dissolve()
    {
        LeanTween.value(From, To, Time).setOnUpdate((float x) => 
        {
            for (int i = 0; i < _renderer.Count; i++)
            {
                for (int h = 0; h < _renderer[i].materials.Length; h++)
                {
                    _renderer[i].materials[h].SetFloat(Param, x);
                }
            }
        });
    }
}