[Zope] How to find items to catalog from a dtml method ???

Hi all, I tried to use the manage_catalogFoundItems( REQUEST, RESPONSE, URL2, URL1, [] ) method of Catalog objects, from a dtml method. But it didn't work... There is still some parameters that I don't understand like URL2 and URL1. Which values do we have to pass ? Is it why it didn't work for me ? Thanks Fred