I am using <dtml-in "Catalog.uniqueValuesFor('hist_cat')"> to make a pull down menu for unique values in the catalog. If I create a new ZClass instance with a new unique value for hist_cat it will then show up in my pull down menu just fine. I do this through a DTML form and do a <dtml-call reindex_object> after it is added. The problem occurs when I go into the management interface and delete that instance. It still shows up in the pull down! If I go into the Catalog and press the Update Catalog button it will be gone. Isn't the catalog supposed to update when instances are deleted? Even if I change it in the management screen the pull down does not get updated. If I did it from a DTML form and used <dtml-call reindex_object> would that fix it? If I have to delete the instance from DTML how do I do that? How can I update the catalog or remove this entry from DTML? Thanks, Phil.