date_default_timezone_set('America/Tijuana');
$year = date("y");

 if (isset($_POST['numFile']))
      {
        $queryDate = "SELECT  max(numFile) as max from inventory_list";
        $saveDate = $connection->executeQuery($queryDate,array($_POST['numFile']));

        $addFolio = 'UPDATE inventory_list SET folio = "EST"."-"."00".'$saveDate'."-".'$year'';
        $result = $connection->executeNonQuery($addFolio,array($_POST['folio']));
      }