[NTG-context] frames within frame

Hi If I have two frames within one frame, how can I vertically align the first (well, or both) framed to top or middle. Here's a minimal example: \starttext \framed[strut=no,height=fit,framecolor=green,background=screen,backgroundscreen=.80] {\framed[height=fit,width=100pt,background=screen,backgroundscreen=.90,frame=on,autowidth=force,align=middle]{first box wants to be on top/middle} \framed[offset=none,height=100pt,width=100pt,background=screen,backgroundscreen=.90,frame=on]{second box}} \stoptext So here the second framed defines the hight, and the first framed is on the bottom of the "big outer" frame. All I want is to have the first box on top or middle respectively. I've tried location, but that didn't work. Adam