BoV: How to change the preselected Button on runtime?

[SoniC]

Hi,
I'm trying to make a Menu with Intro in Maestro with the Button over Video feature. Everything works fine, but
I can not accomplish one effekt, that I want to have:
When I'm going back from a sub menu to the BoV menu,
the button linked to the sub menu should be selected.
Means, when I jump from the main menu to the extras and
then back to the main menu (which is done with BoV) then
the extras button should be selected.
With normal menues I can select the Button I want as
target, but with BoV-menues I can only select the chapter.

Is something like this possible with Maestro?
If so how?
Would it be possible with Scenarist?

Thanks for any help already in advance

SoniC