My Code :
$item = new Items2;
$connection = $item->getReadConnection();
$sql = "CALL `OLViewItemsListViewAllWithCount`('','','',0,0,0,0,0,0,0,'2018-05-15',0,0,10,@aa);";
$items = new Resultset(null,$item,$connection->query($sql));
i need to get the @aa from this Result as a output parameter
how can i get it ?