How do I reference a field from the form tab in the design tab?

To better explain, I have a queryrepeater on a page that needs to reference a field in its Form.

I am trying to apply the same template to an unlimited amount of pages and have it draw content based on the ID in its form field (the pages are created through a form).

I can statically set the ID on the page, and it draws the correct content, but this has to be manually set on every page after the initial page creation.

Thank you for your time.