How to use external screen in IOS?

Hi, i want to use the external screen feature in IOS, but can’t find out how.
I tried it in the following way (using the external displays fesature in simulator), but it never finds a second display:

DBG ("#IOS EXTERNAL DISPLAYS");
DBG ("total number: " + String (Desktop::getInstance().getDisplays().displays.size()));

    if (Desktop::getInstance().getDisplays().displays.size() > 1)
    {
        Point <int> p = Desktop::getInstance().getDisplays().displays[1].topLeftPhysical;
        MV.Screen.getReference (1)->setVisible (true);
        MV.Screen.getReference (1)->setBounds( p.getX(), p.getY(), 200, 200 );
        MV.Screen.getReference (1)->setFullScreen (true);
    }

best regards
Jens

This isn’t supported in JUCE currently.