Behavior BindableProperty not update

Hi!

I created a SetStateBehavior for new feature - VisualStateManager. I set binding beetwen Behavior and ViewModel, but BindableProperty in my Behavior does't update. I checked, and if i setting binding to my ViewModel property without behavior, then all works, but in Behavior doesn't.

This property is State

Behavior:

public class SetStateBehavior : BindableBehavior<View>
    {

        // ===== Bindable Properties =====

        public static readonly BindableProperty StateProperty = BindableProperty.Create(
            "State",
            typeof(string),
            typeof(SetStateBehavior),
            null);

        public string State
        {
            get => (string) GetValue(StateProperty);
            set
            {
                SetState(value);
                SetValue(StateProperty, value);
            }
        }


        // ===== Private Fields =====

        private View _element;


        // ===== Override Methods =====

        protected override void OnAttachedTo(View bindable)
        {
            base.OnAttachedTo(bindable);

            _element = bindable;

        }

        protected override void OnDetachingFrom(View bindable)
        {
            _element = null;

            base.OnDetachingFrom(bindable);
        }


        // ===== Private Methods =====

        private void SetState(string state)
        {
            State = state;

            VisualStateManager.GoToState(_element, state);
        }
    }

BindableBehavior:

public class BindableBehavior : Behavior where T : BindableObject
{
public T AssociatedObject { get; private set; }

protected override void OnAttachedTo(T visualElement)
{
    base.OnAttachedTo(visualElement);

    AssociatedObject = visualElement;

    if (visualElement.BindingContext != null)
        BindingContext = visualElement.BindingContext;

    visualElement.BindingContextChanged += OnBindingContextChanged;
}

private void OnBindingContextChanged(object sender, EventArgs e)
{
    OnBindingContextChanged();
}

protected override void OnDetachingFrom(T view)
{
    view.BindingContextChanged -= OnBindingContextChanged;
}

protected override void OnBindingContextChanged()
{
    base.OnBindingContextChanged();
    BindingContext = AssociatedObject.BindingContext;
}

}
Xaml:

            <Entry.Behaviors>
                <behaviors:SetStateBehavior State="{Binding Password.State}"/>

                <behaviors:EventToCommandBehavior EventName="TextChanged"
                                                  Command="{Binding ValidatePasswordCommand}"/>
            </Entry.Behaviors>
        </Entry>

Tagged: xamarin.forms behaviors bindings xaml