Hi. I'm trying to query objects in the Catalog that have FieldIndices, effective and expires. this is on Zope2.4.3 and Zope2.5b2. catalog( effective={'query':DateTime(), 'usage':'min'}, expires={'query':DateTime(), 'usage':'max') I dont get anythign returned. using the old syntax of _usage (which by the way still appears in the ZopeBook) I dont really get the right thing either but I can kinda get something. http://runyaga.com/upload_here/catalogTest.zexp jsut remove Catalog create 2 FieldIndices, effective and expires and recatalog DTMLDocuments also it appear sthat the Catalog misreports the #'s of objects with 'effective' indexes. both in the catalog summary report have their effective index. but it only says 1 in the summary of the indexes. I will post a verbose recipe when I figure this out. ~runyaga