Ok, guess i get what u mean.
Actually this functionality was needed to handle PhotoChooser task result and show it as modal window on top of parent.
Right now i have Parent ViewModel that creates an instance of dialog ViewModel, subscribe it to catch PhotoResult and launches task.
Basically, i see photo choser app, but when i select some image, it closes the choser app and also my dialog (after handeling result)..
How can i prevent my dilog from closing?