How to store UID_personhead from AttestationHelper to the Attestationhistory

Hi, 

I need to store the value uid_personhead from the AttestationHelper table in the Attestationhistory table when the case closes. 

This is for a requirement to report on managers who do not complete their Attestations before they escalate.  Currently I can find the helpers that have met this state (Filter Decision = 'e'and rulerlevel = '0' and levelnumber = '1') however when the case closes none of the history objects contain that uid_personhead

Thanks,

Matt