I think it can be done, but you'll need a 6 channel programmable RX like an AR636, as the DXe is not a computer radio. You'd then have to use the programming cable to set the mixes in the RX and assign it to the flap channel on the TX. It's a giant pain, and the AR636 and programming cable are expensive. One of the many reasons I finally bit the bullet and bought a DX8e. Now I can program flaperons on any plane through the TX. Much simpler and easier to adjust in the field.