Cup8489, your screenshot shows you're not in DevMode. Be sure to modify the "Tennis.ini" while the game is closed, and if you use a Custom Profile, modify "Profile\[NameOfYourProfile].ini" instead .
In DevMode, you'll have a big block of information on top left of your screen, with a dark background.
== Mana Games ==
>> I don't answer Private Message, except if it's really a _Private_ topic <<