RachelRachel 133k6767 Gold badges315315 silver badges510510 bronze badges two three Rachel, you might be a wonderful genius!!! And I am an fool. Thanks a great deal for the solution. I had been binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox course. So your DataContext for "video_length_textbox" https://chintamanidwarkaexpressway.blogspot.com/2025/07/aipl-sector-103-gurgaon-premium.html