modifier interaction modes

hey,

I'm new to digital djing so bear with me,

I'm trying to map my oxygen 8 and have succeeded in mapping all controls that I need on decks a and b in traktor 1.2.6. Now I'm trying to map virtually (with a few tweaks) the same settings for decks c and d via the use of modifiers.

I have succeeded in doing so but can only seem to get my chosen modifier key to work in direct mode ie: so that it toggles between the modifier having a value of either 1 or 0.

I would like to engage the my mapping for deck c and d only when the modifier is held down, so that when I let go of the modifier it reverts to 0. My issue is that once I've added my modifier the interaction mode "hold" does not seem to work. The only way I can do it is by adding 2 states to the same modifier in direct mode. Since the keyboard doesn't have leds, this isn't much use. I'm sure it's easy enough, I'm obviously having a brain freeze.