In general, text questions in Presto are wide open: if you can type it, you can enter it. Sometimes, though, you may wish to restrict the type, length or format of the answer to a text question. This can be done in Presto with a regex (short for "regular expression"). Some examples of restrictions:
- Between 8 and 20 characters, including letters or numbers
- Exactly 10 characters, numbers only
- At least 50 characters but not more than 500
- Email address format (any characters followed by "@" followed by at least one character followed by "." followed by at least two characters).
If you'd like to add a regex to your survey, contact our support department (support@prestomobilesurveys.com) and tell us:
- Company name
- Survey name
- Question text
- How you want it restricted