Connect Update 4 Conditional Footer Note

Hi, I have a report that I have customized to indicate when a part has additional length applied to it. I added a note to the footer to say that the "*" means additional length for this part only. This note is visible at all times. I would like to show this note only if any part in the database has additional length. It's easy to do on a individual part to get the "*", but I think I need some kind of global test to indicate when any part in the database has additional length and turn on the note if true. Any ideas I can try?