Hello,
just to precise that I want to convert this code for the Pronto (like 5000 ......) to enabled the alternation.

And after several search, I found this (thanks to johnsfine) :
"5000 0000 0000 0001 00wx 00yz
where wx is the device number in hex and yz is the command number in hex."

So this code woud be :
Stop/Return : 5000 006C 0000 0001 000F 0017
OK : 5000 006C 0000 0001 000F 000E
Forward : 5000 006C 0000 0001 000F 000F

Is it correct ? (I can't try until next week-end)

Thank You