vJoy device number customisation

[uani3]

I might like to choose vJoy device numbers other than 1 and 2 for Windows controller numbering reasons. I haven't seen an option for this thus I suggest it here :) But I haven't figured out how vJoy device numbers relate to Windows internal game controller numbering as for example referencable by Unity (Unity input setup supports joysticks until number 11 as "this number only" or "all joysticks").