MVVM Form Binding with References

using ZK Bind references inside Formbinding, (depending on usage) bypasses the form buffer, or does not save at all
see attached example:

1. reference to propery does not get saved when the form is saved
nameRef="@ref(fx.name)"
<textbox value="@bind(nameRef)" /> <!-- value is not saved to the original object on "save" -->

2. reference to member, and binding the member property on the reference bypasses the form buffer and updates the object outside the form directly
mainTagRef="@ref(fx.mainTag)"
<textbox value="@bind(mainTagRef.value)" /> <!-- saves directly bypassing the form buffer -->