RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two 3 Rachel, you happen to be a good looking genius!!! And I am an fool. Thank you a lot of for the solution. I used to be binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. https://m3mcrowngurgaon.blogspot.com