Sending button command manually via custom arduino sketch

First of all, I want to say that simhub is an amazing software. The more I examine it, the more my admiration grows. I have the utmost respect for the person who made this software. Many thanks for offering us these possibilities ready-made and customizable.

my plan is reading rotary switch position and hold that an variable. for example rotary switch position 4 and it means retarder/ers level 4.
but gamerawdata is 2. so increase that until retarder level will be 4. Its easy but i need to send virtual button command. How can i send gamepad command. i couldn't figure out joystick structre. if is not possible which i think it is possible (maybe not possible because we can change button state momentary but physical button is not pressed. Buttonstate can update until joystick.send(); ), i am planning to use send keyboard commands.

i am worried about this. It's a simple system, but the simhub creator didn't add rotary switches. Increase/decrease buttons can be defined in the software. rotary switches could be bound to properties such as ers/retarder.

Second method (Ncalc);

i tried use ncalc formulas in control events tab. we can read some data and process them bu we cant use button as trigger.