ur22 interface, yamaha motif, logic x, no playback


I have my yamaha es8 hooked up to ur22 interface and recording on my mac in logic x. the keyboard works as a midi controller, but when I try to record the actual keyboard sounds into logic, it seems to register the sounds and record them although i cannot get any playback.

Not sure what I am doing wrong but i hope it is simple.

I have a midi cable to the ur22 from the yamaha keyboard, though do not have a return midi connection. Could this be the problem? I also have two in/out analogue cables to the ur22 and have tried recording in various ways.

amy help and ideas gratefully received.