Timea,

Not sure what the implementation trouble is:


   1. User makes some interaction (i.e. button click) so you fire and event 
   (i.e. ShowSomethingEvent(id))
   2. A listener sees the event and fires and RPC with the data from the 
   event
   3. On returning the async handler for the call you just made updates the 
   UI with the desired values.

You could add an extra event (i.e. SomethingDataReadyEvent) and fire it 
when the RPC comes back, but it is the same as steps 1 & 2.

Sincerely,
Joseph

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