Thanx I finally found the good syntax : -> numero_doc is a 'field index' in the catalog and a 'string' in the property sheet of MyZclass (with CatalogAware) -> I don't use a stored query [as asked Arno Gross] it was <dtml-in "Catalog({'numero_doc':'thedoc'})"> and not <dtml-in "Catalog({'numero_doc','thedoc'})"> () / \ | <> | (____) zazen rules ... _______________________________________________________ Send a cool gift with your E-Card http://www.bluemountain.com/giftcenter/