How can I use toolkit:EventToCommandBehavior for TapGestureRecognizer Event: PanUpdated, I mean something like this:

<Ellipse.GestureRecognizers>
  <PanGestureRecognizer PanUpdated="some_event"></PanGestureRecognizer>
</Ellipse.GestureRecognizers>

I expect somthing like this:

<Ellipse.GestureRecognizers>
  <PanGestureRecognizer.Behaviours>
    <toolkit:EventToCommandBehavior
      EventName="PanUpdated"
      Command="{Binding PanUpdatedCommand}" />
  </PanGestureRecognizer.Behaviours>
</Ellipse.GestureRecognizers>

But I can’t use PanGestureRecognizer.Behaviours. So my question how do I use EventToCommandBehavior for PanUpdated?