More than one sql Query in Accounting

Hello, i want to run more than one SQL Query when a User logoff. the first Query is the accounting_stop_query to insert Accounting infos. the second Query is for recalculating the remaining traffic for the User (for ChilliSpot-Max-Total-Octets). When i insert one new section in the sql.conf like the sql {...} and add it in the accounting section of the radiusd.conf the radiusd coldnt start and print out a memory access error Message. can everybody help me to solve this Problem Bertram sorry for my bad english