There is a very simple extension for puremvc+pipes for easily send notifications between cores.
just use the connect method in the LabzJunctionMediator( that you extend ) to link the app to a MoviePipeAware.
The modules that you load must extend the MoviePipeAware class.
This is not well commented but it is very easy to use as you will see in the example.
If anybody can tell me any imprecision in my code, please you're welcome.