A client I am working for has a requirement to use historical data in Google Analytics to present a report that shows them page views on a specific page, but only when refereed to said page from the homepage, basically like in-site ad tracking. I have discovered that I can create reports that are grouped on a user-defined variable, however I need previous data to also be included in this report, and therefore cannot simply define this inside of my Google Analytics call.
I have therefore been experimenting with Advanced filters, in an attempt to populated the user-defined field with a query-string variable. I have attached an image below illustrate my current configuration:

This configuration isn't populating the "User-Defined" field, and therefore not producing the desired results.
Any help would be appriciated.