RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges 2 three Rachel, you are a lovely genius!!! And that i am an fool. Thanks so much for the solution. I used to be binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox course. So your DataContext for "video_length_textbox" https://lowriseapartmentsingurgaon.blogspot.com/2025/07/aipl-sector-103-gurgaon-wellness-living.html