This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
There's nothing special about a single-value select statement. You code a getter and setter for a property of type String, just as you would with any other ActionForm property. In this case, getSelectedCounty, and setSelectedCounty.