.constant(name) is a wrong approach, you cannot change text in textfield because binding is constant.
uni.nova.hero
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There is not issue with nameBinding or with viewModel.name, with both variants you have a crash. Your suggested approach with .constant(name) means that this Binding won't be changed in ChildView, but it supposes to be changed, because it has text field, so .constant(name) is not correct.