Connecting problem!!

i can't connect my 2500 with my motif-rack,i have connect the motif wit
mpc"motif in - mpc out"after i'm going in midi sync,setting the good output
and put the motif in multi but not one sound!!i wanna sync cubase sx 3 with my mpc,but i can't if firstable i can't connect my module first.Someone
can help me?

mode + program -> note: check the midi-note-values.
or
mode + programm -> sync: check sync in and out

i do that but nothing new,maybe someone have a motif-rack with his 2500
and can explain me all the process from the begining with the midi cables,
maybe i have miss something,this^prob is my unique prob with mpc for
the moment.thx.