I am working on a form that contains hidden fields that are assigned values through look-up rules that the submitter does not need to see.  Here's the scenario:

• User picks a radio button (let's say choices are Yes, No, Needs Revisions)
• Field Rules bring up drop-down pick lists (dept and name) filled by lookup rules, different ones for each radio button choice.
• The hidden field is populated based on the name chosen in the pickup list showing at the time.

This works great... except if someone is playing around with the radio buttons and picks different ones.  If they just pick one and fill out what comes up, the hidden field gets filled perfectly.  If they then pick a different radio button, the hidden field goes blank, but DOES NOT refill once the new name field gets populated. 

Correction:  I just tried it again and the names filled properly after two changes, but not a third.  So, the hidden field clears out and refills only sometimes!  Another test immediate after and the hidden field did not take the second change.

How can I get the hidden field to clear out AND always change back to what is in the Name field that is currently showing?