ADODB store session to database

Hi all , I am having problem in store session in the database . Below is the example code from code. The issue is that the code run ok , however the expireref fields is not updated in the sessions table, below is the sessions schema : CREATE TABLE sessions ( sesskey varchar(32) NOT NULL default '', expiry int(11) unsigned NOT NULL default '0', expireref varchar(64) default '', data longtext, PRIMARY KEY (sesskey), KEY expiry (expiry) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 | Anybody have ideas why all fields are updated except expireref field ? <?php function NotifyExpire($ref,$key) { print "<p><b>Notify Expiring=$ref, sessionkey=$key</b></p>"; }

        $ADODB_SESSION_DRIVER='mysql';

$ADODB_SESSION_CONNECT='....'; $ADODB_SESSION_USER ='....'; $ADODB_SESSION_PWD ='....'; $ADODB_SESSION_DB ='....'; $ADODB_SESS_DEBUG = 99;

        session_start();
        $userdata = new User();
        $_SESSION['USER_NAME'] = $userdata->getUsername();

$ADODB_SESSION_EXPIRE_NOTIFY =array('USER_NAME','NotifyExpire'); ob_start(); include('./library/adodb/session/adodb-cryptsession.php'); adodb_session_regenerate_id(); $_SESSION['MONKEY'] = array('1','abc',44.41); if (!isset($_GET['nochange'])) @$_SESSION['AVAR'] += 1; ?>