HEADPHONE CUE PROBLEM

Hi,
i'm using U-MIX44 as my external soundcard in TRAKTOR PRO 2!
but i got an issue with headphone cueing.
i use as audio device : MixVibesAsioUMIX44
as my moniter i use channel 3/4
and as my master channels i use 1/2
but i can't get almost any sounds out of my headphone.
every time i activate the cue button, the speakers also play.
please help me, i'm desperate
Kind regards
i'm using U-MIX44 as my external soundcard in TRAKTOR PRO 2!
but i got an issue with headphone cueing.
i use as audio device : MixVibesAsioUMIX44
as my moniter i use channel 3/4
and as my master channels i use 1/2
but i can't get almost any sounds out of my headphone.
every time i activate the cue button, the speakers also play.
please help me, i'm desperate
Kind regards