The HealthServiceActionPage gives you a very nice mechanism by which you can declaratively define pages handling various HealthVault shell targets. However, folks frequently run in to situation where they need more dynamic way of redirecting and handling shell targets. A simple scenario is if you want to user to come back to the same URL clicked after being authorized by healthvault shell, e.g. Go to https://www.healthapp.com/username/stats instead of going to the default home https://www.healthapp.com/username/. The code snippet here illustrates how to extend and over-ride the HealthServiceActionPage.