Sooo far

Trasoft program is up and running. I managed to find a relationship between an entered key and an entered message. The problem that i am having now is to handle the enter button and the tab button,i.e by pressing the enter button would crush Trasoft program, which is unacceptable. I think is because i used array to scan keys and messages.The only thing that left is to decrypt message. HOPE I WILL FINISH EVENTUALLY.