public static function updatePartition($channelId, $partitionName, $countries, $returnAddress, $enable, $id)
 {
     self::initDB();
     $sql = "UPDATE trans_partition SET channelId={$channelId},partitionName='{$partitionName}',countries='{$countries}',returnAddress='{$returnAddress}',enable={$enable},lastmodified=" . time() . " where id={$id}";
     $query = self::$dbConn->query($sql);
     if ($query) {
         return mysql_insert_id();
     } else {
         self::$errCode = "003";
         self::$errMsg = "die";
         return false;
     }
 }