OrganizerModel cannot save OrganizerItems(Event) in Symbian Device

When trying to save an Event in Symbian Device the model is not updated.

Code to reproduce:
OrganizerModel

{ id: organizerModel manager: "symbian" // works fine when using simulator or memory as manager startPeriod:'2009-01-01' endPeriod:'2011-12-31' autoUpdate: true }

Event

{ id:newEvent1 displayLabel: "NewEvent1" allDay: true description: "This is a new created event 1" startDateTime: new Date(2011, 10, 26) endDateTime: new Date(2011, 10, 27) }

Then try to save with:
organizerModel.saveItem(newEvent1);
organizerModel.update();

This works perfectly when using "Simulator" or "Memory" as manager.