UE5.3 plugin UMG ViewModel, how to unbind and rebind at runtime?

[OriginalSinCat]

There is some feature usage problem about Viewmodel.

1. How to unbind some widget at runtime?(For example, Widget Text1 and Widget Text2 is binding with ViewModel property MyFloat1, I’d like to unbind Widget Text2 at runtime but keep Text1 binding) .
2. How to rebind at runtime?(For example, rebind Text2 with a ViewModel another property MyFloat2)

Is there any blueprint or cpp example?