I want to add the email of the respondent user when downloading the questionnaire report.
I've Modify the setting.php file as and add " 'email' => get_string('email') " as following screenshot
Then I go to site administration -> plugin -> local plugin -> questionnaire and it's show the email address on the questionnaire setting page and I selected it.
When I downloading the result on one letter appears in the downloaded report. as the following screenshot
Is there any additional changes I need to have to retrieve the email address within the exported report?