Please see the model in attachment. I started prototyping with it. It does work with XML-Persistance, SQL and MDriven-Server, but not with local Turnkey.
Repro: Start Prototyping -> Seekers -> Action Person Seeker -> add some new Persons with New Person -> Select one -> Show Person -> try to set Father or Mother with "Set" Button. Nothing happens. In other kinds of Prototyping the Seeker is called, and you can select a person and set it as Father or Mother.
Efim