[rules-users] Java beans inheritance

Hi, I have a class hierarchy of objects that I'm inserting as facts. Lets say X, Y extends X and Z extends Y. I have a rule that is defined on X and therefore applies to all of them, however in the rule I want to ask about the class name and I'm referring to it as class.name=="some.class". This should work as far as I understand coz it keeps the java beans format, however it is not directly defined in the class X but rather in Object. The error I'm getting is "Error: could not access: name". Any idea what I'm doing wrong? Thanks, Dawg