Thanks for response Giuseppe,
We configured DEBUG as you recommended.
We are going to monitor.
It seems we had some problem with java script module pattern and subscription to LS events.

Regarding another question.
For example we want to know city population of Italy.
So we subscribe:
new Subscription("COMMAND", "Italy", cellList);
and return items:
Italy|Milano
Italy|Roma
Italy|Lanciano

We want population per region, so we subscribe:
new Subscription("COMMAND", "Abbruzzo", cellList);
and return items:
Abbruzzo|Aquila
Abbruzzo|Lanciano


When Lanciano has changes in population do we need to do:
_listener.OnEvent("Italy", update[Lanciano], false)
_listener.OnEvent("Abbruzzo", update[Lanciano], false)

or
it is better to subscribe at city level?
new Subscription("COMMAND", "Milano", cellList);
new Subscription("COMMAND", "Aquila", cellList);
new Subscription("COMMAND", "Lanciano", cellList);
new Subscription("COMMAND", "Roma", cellList);

Best regards !