cactusfloyd

i have a korg x5d keyboard, and i am using it as controller for cubase.
it can separate the keyobard in areas, so you send chanell 2 for example from c-1 to c-2, channel 6 rom d3 to g3, etc...
cubase doesnt seem to obey this, so when i play anywhere in the keyboard the vsts are sounding, even if they are assigned to channel 2 for example or channel 6. it seems cubase pick the notes and send them to all channels.
can anyone help?