Thanks for your answer, that is why I was asking what the expected behaviour was. If that is the case, then I will do a small example to see where I am going wrong.
In my example I am trying to turn off the side menu's from a side menu item, which is not what I am doing in my real app, but it should demonstrate what I need to do. Just not sure if that is what the property is for.
Do I have to reassign the KeyController instead to achieve what I want to do?