Hi Jack,
You have an aggregate in preparation that has a filter on the form Movie.Id = MovieId (don't know if the names are correct).
So, you have the LIST (with a single record, because there are no two ID's repeated in the table) and the LIST.CURRENT <= First record returned from database.
To use in the page you simply type like this:
GetMovieById.List.Current.Movie.Title (or GetMovieById.List.Current.Title, don't remember).
But as you type, everytime you type the dot "." after an element, (like GetMovieById), it will fill automatically (when there is only a single option) or show you a list for you to pick.
Cheers,
Eduardo Jauch