RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges 2 3 Rachel, you are a lovely genius!!! And that i am an fool. Thanks a lot for the solution. I was binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. .. Although the syntax will probably transform https://m3mprojectnewgurgaon.blogspot.com