We also want a way to do this with the Unique situation of the parameterizable attribute, but still enable the default assign scenario to work. You will see how I tackled this underneath. So your DataContext for "video_length_textbox" is set to itself, and also your IncrementingTextBox course does not have https://emaarsector112.blogspot.com/2025/05/unlock-future-with-signature-global.html