RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges two three Rachel, you're a beautiful genius!!! And that i am an fool. Thanks a lot for the answer. I had been binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. of this abstraction. The values for https://share.evernote.com/note/d2d5635f-e5ac-d398-46b8-8b32d8b89039