public function create_answers($properties) {
        if (isset($properties->enableotheranswers) && $properties->enableotheranswers) {
            $properties->response_editor = array_values($properties->response_editor);
            $properties->jumpto = array_values($properties->jumpto);
            $properties->score = array_values($properties->score);
            $wrongresponse = end($properties->response_editor);
            $wrongkey = key($properties->response_editor);
            $properties->answer_editor[$wrongkey] = LESSON_OTHER_ANSWERS;
        }
        parent::create_answers($properties);
    }