[Koha] AdvancedSearchTypes and OPAC

Hi all, I'm trying to add tabs for collections (ccode) and shelving locations (loc) to the advanced search pages for the OPAC client. I set the AdvancedSearchTypes preference to "itemtypes|ccode|loc", and this caused the ccode and loc tabs to appear on the staff client search page, as expected. But the OPAC client advanced search page still shows only the itemtypes tab. Is there some other preference I need to set to get the additional search tabs to appear on the OPAC? Thanks in advance, Mark