recording audio from yamaha01x to cubase studio4

I’m trying to get my guitars ,keyboards,etc. to record the audio to Cubase Studio 4…I can hear my audio {keyboards,guitar]from the Yamaha 01x…Hearing and Recording the vst instruments…No Problem…I can’t get any signal running from the 01x though the cubase 4.I can hear,adjust the volume…The cubase is showing that the audio in’s and the out’s is being handled by the 01x… :confused: