RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges 2 three Rachel, you are a lovely genius!!! And that i am an idiot. Thanks a great deal for the answer. I used to be binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. Names are better at https://newcommercialpropertygurgaon.blogspot.com/2025/06/ganga-realty-liv-89-ushers-in-elegant.html