If you have a running Windchill instance, then you can use the same link, but replace the hostname with the hostname of your Windchill server.
Otherwise, here's a link to the same article in the WHC hosted on PTC's support site:
http://support.ptc.com/cs/help/windchill_hc/wc102_hc/index.jspx?id=ObjRuleSpecification&action=show