RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two three Rachel, you might be a good looking genius!!! And that i am an idiot. Thanks so much for the solution. I was binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. The problem is "precisely what https://elancommercialsector106project.blogspot.com