RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two 3 Rachel, you happen to be a wonderful genius!!! And that i am an idiot. Thank you a great deal for the solution. I used to be binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. .. https://medium.com/@AiplJoyDistrict/modern-serenity-awaits-at-aipl-sector-103-gurgaon-af77f40554b7?postPublishedType=initial