protected function AddRichTextField($name, $value = '')
   {
        $renderer = new CKEditorRenderer(PathUtil::BackendRTEPath(), PathUtil::BackendRTEUrl(),
            PathUtil::UploadPath(), PathUtil::UploadUrl(), self::Guard());
        $field = new Custom($renderer);
        $field->SetName($name);
        $field->SetValue($value);
        $this->AddField($field);
        return $field;
   }