# Step 6: File Maintenance Field Layout

Email and URL Input Validation |

(Applicable when HTML Page check box is selected for Form Type)

To validate the input entered for a data dictionary field as either an email address or URL on a generated Webster+ HTML page, the data dictionary field must have a data class with a Class Name "Email" or "URL" (case insensitive) assigned to it.

To do this:

1. | Create a new data class definition in Data Class Definitions maintenance. For the Class Name, enter "Email" or "URL" (case insensitive).
2. | Then, assign the data class to the data dictionary field in Data Dictionary Maintenance (on the Elements tab).

(Email and URL input validation for generated Webster+ HTML pages was added in PxPlus 2021 Update 1.)