New Post: Wizard Databinding

Hi List,
i have the following XAML:

<Window x:Class="ICSharpCode.Reporting.Addin.ReportWizard.Dialog.ReportWizard"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
    xmlns:local="clr-namespace:ICSharpCode.Reporting.Addin.ReportWizard.Dialog"
     xmlns:diagnostics="clr-namespace:System.Diagnostics;assembly=WindowsBase"
    Title="{Binding Title}"
    Height="600" Width="600">
<Grid>

<xctk:Wizard x:Name="_wizard" FinishButtonClosesWindow="True"
             CurrentPage="{Binding CurrentPage,
             UpdateSourceTrigger=PropertyChanged,
             diagnostics:PresentationTraceSources.TraceLevel=High }
             CanHelp="False" >
    <local:PageOne></local:PageOne>

......more xaml

My Viewmodel:

public string Title {

        get{ return "das ist der Title";}
    }


    WizardPage currentPage;

    public WizardPage CurrentPage {
        get {return currentPage;}
        set { currentPage = value;}

}

and have Problems with Databinding.
The binding to Title is working, but i'm not able to bind to CurrentPage.
Any idea's ?????

Thanks in advance
Peter