Max-Daily-Session for current station only

Hi. I'd like to create a counter which is exactly like the Max-Daily-Session, but should count only the time consumed on the current Called-Station-Id only. This because using HuntGroups I'd like to allow the user to connect 1h from station A and 2h from station B. Having a look at the rlm_sqlcounter shipped with FR2 I find there are only three possible parameters to be used in the query, and this doesn't include the NAS. Any help on how to implement this counter? Thanks -- Lorenzo Milesi - lorenzo.milesi@yetopen.it YetOpen S.r.l. - http://www.yetopen.it/