The easiest way is by using the Transformer Insert FX on the desired Instrument (or MIDI) track.
Set it up like this…
Upper section…
Type Is___Equal___Note
Lower section…
Value 1___Add___12 (Parameter 1)___(Parameter 2 is inactive in this case)
Function = “Insert”.
(Be aware that only the original note is actually recorded… this is a playback function 
)