OSC wheel and FAN

Hi 

I try in the last version of cobalt on my mac to do a FAN move with PAN.

I found the syntax for a FAN : "/cobalt/key/fan" and I found the syntax for PAN : "/cobalt/param/pan/wheel" 

but if I combine FAN button press and wheel PAN, it doesn't work.

I think the problem is : FAN can worked with the wheel (the first) not with de PAN parameter ! 

If I combine FAN button press on OSC and I move the first wheel on the virtual remote on my Mac with the mouse, it's worked ! so the problem is the syntax missing of wheels.

Any solution to fix it ?

Thanks for your helps