RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges 2 3 Rachel, you're a wonderful genius!!! And I am an fool. Thank you a great deal of for the solution. I used to be binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. This generally presents https://yashikaplatinastreet109gurgaon.blogspot.com