yes. that's what i say. it should work like that. class_name/attribute_name is a object relation and no object_relation_list, right? if second then that won't work, but if it's the first, then it should...
it could help if you enable your debug and sqloutput. after clearing caches and requesting your page, you should see all the queries needed for generating the page. one of them should be using that '143' somewhere...
maybe you can check that and see if debug says something about...