Problem in using counters

Hi all, I have upgraded to Freeradius ver 2.1.1. I want to use counter (using sql) so I added counter.conf in modules, nonresetcounter, dailycounter and monthlycounter in authorize section in default. Also added an entry in radcheck Username=123, attribute = Max-Daily-Session , op = := ,Value = 100. Now when I execute radius and send auth packet for user=123 it goes to sql_rlm and ends up with following error: rlm_sql: Failed to create the pair: Invalid octet string "100" for attribute name "Max-Daily-Session" rlm_sql (sql): Error getting data from database [sql] SQL query error; rejecting user And then it sends Accept-Reject reply Can anyone tell me where is the problem??? Regards, Saeed Akhtar