RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges 2 three Rachel, you're a beautiful genius!!! And I am an idiot. Thank you a lot for the answer. I had been binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. Nor thinking In case the validation https://m3mcommercialsector25gurgaon.blogspot.com