As I did mention in other posts I do need for my gear-setup the possibility to transpose a running P6-sequence by sending note information (with an external Midi-keyboard or an external Midi-sequencer) WITHOUT pressing the "rec"-bottom on the P6 ("hands-free transposing" - as it is possible with my other synths)
I programmed now an "Event Processor Plus" from Midisolutions which I bought used for EUR 50.- in such way that when it is placed between my Midi-Keyboard (or Midi-sequencer) and my P6 it translates / converts the Midi notes into a series of Midi-Control-Change-messages for the P6 thereby telling the P6 to transpose a running sequence.
It works really smooth

For anybody who is interested doing the same I´ve attached the EPP-program.