private static int SetTweenAlphaInfo(IntPtr L)
    {
        int result;

        try
        {
            ToLua.CheckArgsCount(L, 5);
            GameObject go       = (GameObject)ToLua.CheckUnityObject(L, 1, typeof(GameObject));
            float      from     = (float)LuaDLL.luaL_checknumber(L, 2);
            float      to       = (float)LuaDLL.luaL_checknumber(L, 3);
            float      duration = (float)LuaDLL.luaL_checknumber(L, 4);
            float      delay    = (float)LuaDLL.luaL_checknumber(L, 5);
            TweenUtil.SetTweenAlphaInfo(go, from, to, duration, delay);
            result = 0;
        }
        catch (Exception e)
        {
            result = LuaDLL.toluaL_exception(L, e, null);
        }
        return(result);
    }