Hello all, I'm working with a zclass that has a 'lines' property (for the sake of discussion, it will be called 'listing_cats'). The lines property is a list of numbers (which are id's). I want to go through my Catalog and find all objects that have a list_cats that contains a given id (lets say 4928 for example). For my examples, the id will be called 'current_id'. I've tried two things: #1: set 'listing_cats' to current_id then proceed with the dtml-in Catalog and #2 perform a Catalog.searchResults(listing_cats=current_id) Neither of these worked. I'm using a KeywordIndex on my lines object. I kind of expected #1 not to work, but I am suprised that #2 didn't work. Any ideas on how I can do a search on the lines property like I mentioned? ~Mark