Reply to Numark Omni Control - need help for monitor cue buttons mapping

Hi everybody.
I'm asking to have some help for mapping the monitor cue buttons for the Omni Control using Traktor pro 2.1.1.
Suppose I have the monitor cue button for deck A on. I would like to have the monitor cue for deck B (when pressed) to automatically switch off the one for deck A and vice-versa.
I've already played with modifiers and tried different settings without any good result.
Any help is appreciated. Thank you.