Android Monitoring

I am working on Estimote Demos. I would like to change the Demo in order to have a Notification automatically when the user is close to a particular beacon.
For now what I have done is delete the Notify Demo button in the Estimote Demo and I have created an Intent that launches the NotificationDemoActivity in order to let it work as soon as the app starts. However it does not notify me anything (Enter/Exit region).
Do you have any idea of how to do this or do you have any other examples? I am working with Android.

Was demo working for you? If yes then you must have deleted too many code from the demo.