RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two three Rachel, you might be a wonderful genius!!! And I am an fool. Thank you a lot for the solution. I used to be binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox course. ✦ Think about refactoring https://countyprojectinnoida.blogspot.com/