RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two 3 Rachel, you might be a beautiful genius!!! And I am an idiot. Thanks a lot for the solution. I used to be binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. MaartenMaarten 23k33 gold badges5151 https://bestpropertygurgaon.sport.blog/