I think I know what the problem is and it breaks my heart...
I don't have a license for Simulink Coder... Therefore this will only work in simulation mode with simulated values... Never will it work for the mortals who can't afford to buy the commercials versions of Matlab and Simulink for $ks... a year.
I was really looking forward to deploying my pinball game logic on my Arduino... Oh well another classic case of a paywall being the barrier to innovation... Even after I spent hundreds on the various home use licenses to learn about using the various cool tools Mathworks has to offer.
Sadly,