Semler, thank you so much for all the time you spent for me. I really appreciate!
I tried this sketch but a found some issues.
First, when i verified the code, the software triggered a problem with "'int buttonArray[2]'" Maybe because there are 3 buttons now. Anyway i replaced with 3 and no more messages.
Then, the 3rd axis is well recognized frow Window game controler but won't moving. The rotary is wired to pin 9 and pin 10 according to your sketch. I tried as well to swap rotaries to make sure, but still won't moving... In attached files 2 pictures of my project. To be more clear, i removed all switches. Only rotaries still connected.
Best regards.
Arnaud.