[Freeswitch-users] Javascript, Hanguphooks, CDRs and User Variables.

Hi, I have an application where my Javascript hanguphook code calculates a value (e.g. the cost of the call which can only be calculated post hangup) and I need to have that value appear as a field in the cdrs. As the 'session' object is no longer available for javascript logic post hangup, I can't figure out how to 'set' a user variable post hangup, such that it can be written to the cdr when the state changes from CS_HANGUP -> CS_REPORTING. Maybe it's just not possible......? It would be a pity to have to resort to writing out cdrs from the javascript itself and duplicating what fs does so well already. Any advice / suggestions would be appreciated. Best Regards Keith