Tabitem visibility binding WPF

Question

I'm trying to bind tab item visibility but it's nothing happening here is my code

<TabItem Header="{Binding tabVisibility}">

and in my view modal

public Visibility tabVisibility
        {
            get
            {
                return _visibility;
            }

            set
            {
                _visibility = value;
                NotifyPropertyChanged();
            }
        }

Answer 1

<TabItem Visibility="{Binding tabVisibility,Mode=TwoWay, UpdateSourceTrigger=PropertyChanged,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=TabControl}}">

Answer 2

Solved it. the problem is the property is in another view modal it was my mistake