That GForm Validator - Adds validation to elements of Google Forms
Welcome to That GForm Validator!
This extension can be used to add validation to a few types of input fields in a Google Form. The available input types are: Text boxes (Phone numbers / UNHCR numbers / email addresses) and Dates.
Once you install the extension, everything should be loaded up! If you have any problems, email the developer.
Documentation and code can be seen here: https://github.com/Beamanator/That-GForm-Validator-CExt