RachelRachel 133k6767 gold badges315315 silver badges510510 bronze badges two 3 Rachel, you are an attractive genius!!! And I am an fool. Thanks a lot for the solution. I had been binding to self and didn't have a 'ConfigurationModel' property in my IncrementingTextBox class. So your DataContext for "video_length_textbox" is about https://navrajinfratechprojects.video.blog/2025/07/10/ganga-realty-liv-89-gurgaon-perfect-for-families-seeking-privacy-and-peace/