Using Morse Runner

I made this to show a friend what Morse Runner is. I'm having to focus on the code as I'm just learning, so it's hard to narrate as I go.
This is a Morse Code Amateur Radio Contest simulator. It's being run in Single Call mode which means that the other simulated operators are queueing up one at a time to talk to me, rather than all piling in. I don't need to handle listening to many at once!
The other operator sends a call sign. I respond with that call sign and my signal report which is always "599" and a serial number. The signal is 599 regardless of how good or bad the signal actually is! (You could call that cheating perhaps). If I get their callsign right they respond "R" for Roger then their signal report (599) and serial number. Some of the numbers are sent in short form T for 0, N for 9.
The other station may ask me to repeat information, or may correct me if I'm wrong with the callsign.
I am using this to learn. This is still relatively early days for me.