private static function get_sameWith_value($dio, $rules)
    {
        $sub_name = $rules['sameWith'];
        if ($rules instanceof Rules) {
            $sub_filter = clone $rules;
        } else {
            $sub_filter = $rules;
        }
        $sub_filter['sameWith'] = false;
        $sub_filter['required'] = false;
        $value                  = $dio->find($sub_name, $sub_filter);
        $value                  = $dio->verify->is($value, $sub_filter);

        return $value;
    }