RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges 2 3 Rachel, you will be a beautiful genius!!! And I am an idiot. Thank you a lot for the solution. I was binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. MaartenMaarten 23k33 gold badges5151 silver badges6969 https://bestpropertyinvestmentingurgaon.blogspot.com