RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges 2 3 Rachel, you are a good looking genius!!! And I am an idiot. Thanks a lot for the answer. I had been binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. 0 and higher) - which https://newlaunchprojectnoidaextension.blogspot.com/