Need page numbering to automatically change when users add a new page to a fillable form

In Headers and Footers, I have <<Page 1 of n>> chosen. My form is one page long, but I have a button that can create a second page if the user needs to. However, if a user decides to create a second page, the footer doesn't change from "1 of 1" to "1 of 2" on the first page and then "2 of 2" on the second page. Instead, both just say "1 of 1." How can I change this so that when users add new page, it changes the numbering?

Thank you!