No Boka, check your facts again. The Vojna Krajina was set up long before Maria-Theresa and the Vlachs were brought in long before she was born. Learn your history.
You just don't give up, even when you've been proven wrong!
Your own sources says that the Statuta Valachorum (the agreement with the Vlachs) was "never put into practice." History says that an agreement between Maria Theresa with the Serbs WAS put into practice.
2+2=4 Dio. Perhaps it's math, along with history, that you are having a problem understanding.