Is dynamically generating spring-webflow possible?

For example: a user selects one or more "Systems" (checkboxes from a page) I then need to handle webflow for the user to select "Roles" for the "Systems" they checked. The list of "Systems" is dynamically pulled from a database as is the list of "Roles" per system. Any advice on how to accomplish this using Spring Webflow?

Ideally I can use the same view for all the "Roles" pages, just passing the appropriate value in the MAV.

Thanks in advance!
-Steve