Is there anyone who is able to run the example in the com.ibm.team.workitem.extension relating to the Risk attribute?

From reading the plugin extension, it seems like I need to invoke the AddRoskAttributeAction from the Edit menu. However, after selecting the menu item, it complained that the operation is not available. I even tried enabling the Ticket workitem type, which seems to be significant since it's in the plugin.xml, but it didn't seem to help. The example seems like a great resource for extending Jazz, but yet I'm very frustrated about the difficulties in even running it.

Any help is much appreciated!
Annie