RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges 2 3 Rachel, you might be a beautiful genius!!! And that i am an fool. Thanks much for the solution. I had been binding to self and did not have a 'ConfigurationModel' property in my IncrementingTextBox class. MaartenMaarten 23k33 gold badges5151 silver https://propertyforsalegurgaon.data.blog/2025/07/11/live-in-peace-and-style-at-ganga-realty-liv-89-sector-89-gurgaon/