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.
After doing some testing, what's weird is that apparently it was the return type of Boolean (rather than boolean) in conjunction with the is/get prefix for the accessor method that was tripping you up.
The following formats work as one would expect:
generates the "Unable to find a value" error (at least under Tomcat -- Resin 3 returns a blank rather than throwing an error).
I'm not as familiar with the JavaBeans Specification as I am with the Servlets, JSP and JSTL specs, so I'm not sure exactly what precept the latter form violates.