active stack

[Beat Cornaz]

I have a mainstack with several substacks. One of the substacks is a  
tiny 'Indicator' and I have 'set the systemWindow of stack  
"Indicator" to true'.
So this stack floats above everything else. I have a button to go  
from substack A to substack B. I have - go stack "B" - in the script  
of the button.
Clicking the button does make the substack "B" appear, but it has not  
become the active stack. Only if I click in the substack "B" it  
becomes the active stack (and gets the proper menu in Mac OSX).
All works fine if I close the stack "Indicator".
So, what commands do I use to make the stack appear and become the  
active stack with the indicator open?. Toplevel does close the stack  
first (i don't want that) and does not work either as I can remember.

Thanks,

Beat