I have two fields on a survey, mail and confirmail.
The second fields is only to insure than our first field is entered correctly, but I can't find a validation rule allowing me to check the confirmail according to the mail field.
Any suggestion ?
Assuming the question code for the first question is "mail", you can place something like this in the "Question validation equation" field of the second question:
this == mail
Then, something like this in the "Question validation tip" field:
{if(this != mail, 'The email addresses do not match!', '')}