Use Brush on a single subplot

Hi,

I'm creating a gui that contains two subplots: a large 'display' subplot and a smaller 'interactive' subplot. I'd like to use the brush function in the gui but cant find a way to have it work solely for the 'interactive' subplot.

I tried providing the interactive subplot handle to the brush function - brush(interactive_handle) in the hopes it would accomplish this. But the brush function is still being applied to both subplots when I use it.

Thanks in advance, James