Can't change the value of a ContentView, not even use Binding...

I'm using a component with inheritance from ContentView, but i can't change his value with the code behind, not event use Binding to change his value.

XAML:

Code Behind:
if (Application.Current.Properties.ContainsKey("Url"))
{
Name = Application.Current.Properties["Url"].ToString();
autocomplete.Text = Name;
}

Someone have any idea why ?