WinRT, Cocktail and Click

Hi,

I'm testig very trivial example of WinRT app with Coctail (I'm testing client side at the moment).
Everything works fine but 'Click' buton.
MainPage.xaml and MainPageViewModel.cs are well binded - items of a simple list are shown OK on MainPage. But the buton with the x:Name attribute (x:Name="ClickMe") in MainPage.xaml and corresponding method name in MainPageViewModel.cs (public void ClickMe() {...}) doesn't work.
What I'm doing wrong?

Thanks in advance for any advice.


MainPage.xaml:

<Page x:Class="App1.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:App1"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:cocktail="using:Cocktail"
      mc:Ignorable="d">

    <ScrollContentPresenter>
        <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">

            <Grid.RowDefinitions>
               <RowDefinition Height="Auto" />
               <RowDefinition Height="1*" />
            </Grid.RowDefinitions>

            <Button x:Name="ClickMe"
                     Content="Click me !" />

            <ListBox Grid.Row="1"
                     ItemsSource="{Binding MyEntities}">
               <ListBox.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding DocumentNumber}"
                                       Foreground="Red" />
                        </StackPanel>
                    </DataTemplate>
               </ListBox.ItemTemplate>
            </ListBox>

        </Grid>
    </ScrollContentPresenter>
</Page>



MainPageViewModel.cs:


using Caliburn.Micro;
using System.Collections.ObjectModel;
using System.Composition;

namespace App1
{
    [Export]
    public class MainPageViewModel : Screen
    {
        public MainPageViewModel()
        {
        }

        // This list is shown on the MainPage - binding is OK
        public ObservableCollection<MyEntity> MyEntities
        {
            get
            {
               var myEntities = new ObservableCollection<MyEntity>();
               myEntities.Add(new MyEntity{Id = 1, DocumentNumber="No 1"});
               myEntities.Add(new MyEntity{Id = 2, DocumentNumber="No 2"});
               myEntities.Add(new MyEntity{Id = 3, DocumentNumber="No 3"});
               return myEntities;
            }
        }

        public void ClickMe()
        {
            // this method is not executed after clicking a button...        }

    }
}