function AddPoints($sessionid, $rewardsessionid, $transactiontype, $amount, $transactiondate)
 {
     $reward = null;
     $rewards = null;
     $reward["RewardSessionID"] = $rewardsessionid;
     $reward["SessionID"] = $sessionid;
     $reward["TransactionType"] = $transactiontype;
     $reward["Amount"] = $amount;
     $reward["TransactionDate"] = $transactiondate;
     $rewards[] = $reward;
     return parent::InsertMultiple($rewards);
 }