you would need to create a new recordset as:
SELECT C2.ContentDate, C2.ContentGroup, C2.ContentPageSetOrder
FROM pcms2_contents AS C1 LEFT OUTER JOIN pcms2_contents AS C2 ON C2.ContentPagesetParentID = C1.ContentID
WHERE C1.ContentGroup = 'zNews' AND C2.ContentPageSetOrder = URLParam
GROUP BY C2.ContentPageSetOrder
ORDER BY C2.ContentPageSetOrder DESC
parameters:
name: URLParam
type: Integer
default value: 1
Run Time value: $_GET['zNews']