RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges two 3 Rachel, you are a wonderful genius!!! And that i am an fool. Thank you so much for the answer. I had been binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. ✦ Think about refactoring https://satyameranogreensplotsgurgaon.blogspot.com