'3' => { MultipleChoiceCheckbox: { '1' => { iscorrect: '0', txt: 'a31' },
                                                                                '2' => { iscorrect: '1', txt: 'a32' },
                                                                                '3' => { iscorrect: '1', txt: 'a33' },
                                                                                '4' => { iscorrect: '0', txt: 'a34' } } },