It is not possible. On the Korg you can choose program numbers to send to the Motif XS, on the Yamaha (even on the T2) you cannot.

If some people about say they got it to work, they are either using multis - which means that you are triggering notes of the XS but you cannot use the T2 to select patches, or they are just using the XS GM and XG kits, in which case there's no reason to use it at all...

[This message has been edited by chony (edited 08-04-2008).]