[Zope] How reindex the Catalog programatically

To work around my problem with my Catalog reindexing (see previous message...), I would like to let my users manually reindex the Catalog, as the "Update Catalog" button in the "Cataloged Objects" do. When I use this button, my Catalog get fixed and work again. So I looked at the method used by the button source (manage_catalogReindex), and created a method calling this function. When I invoke this method, there is no error, but the Catalog still doesn't work! Any ideas ?$%%? Jean-François Ménard Intranet DPAS Pratiques d'affaires et orientations * (514) 840-3000 poste 3939 * (514) 840-5585 * menard.jean-francois@hydro.qc.ca * 855 Ste-Catherine est, 6e étage Montréal, Qué. H2L 4P5