How to get ${CONFNO} ${UNIQUEID} from php agi script for?

Hi, i want to change the path of ${MEETME_RECORDINGFILE} because i do not want it to be placed under /var/lib/asterisk/sounds/. I want to place it in another folder.

The default for ${MEETME_RECORDINGFILE} is meetme-conf-rec-${CONFNO}-${UNIQUEID}

If i specify the folder in front i would override meetme-conf-rec-${CONFNO}-${UNIQUEID} and I cannot access ${COFNO} and ${UNIQUEID}.