Help needed on FreeRadius SQLCounter

Hi All, I have got sqlcounters working with mysql database. I want to sell 15 mins, 30 mins, 1 hour, 2 hour vouchers and I want Freeradius to lock all users who even use 1 min of their voucher time every 24 hours. The vouchers are valid only for 24 hours after logging into network first time. The current options for reset= never & daily which don't work for me. Daily= Will reset midnight and allow user to login next day Never = Will allow user to use time forever until he exceeds "session-timeout" value. Thanks, Sagar