How do I start a Storyboard in a Data Template in a Content Control in a User Control from codebehind?

<ContentControl Name="myContentControl"
    ContentTemplate="{DynamicResource myDataTemplate}"/>

private void StartSB(object sender, ExecutedRoutedEventArgs e)
{
  Storyboard sb = (Storyboard) this.TryFindResource("myStoryboard");
  sb.Begin(this);
}

private void StartSB(object sender, ExecutedRoutedEventArgs e)
{
  object sb = this.myContentControl.TryFindResource("myDataTemplate");
}

<UserControl >
  <UserControl.Resources>
   <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="ResourcesmyUCResources.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
  </UserControl.Resources>
  <ContentControl Name="myContentControl"
           ContentTemplate="{DynamicResource myDataTemplate}"
               Content="{Binding}" />
  ...
</UserControl>

namespace myclass
{
  public partial class myUserControl: UserControl,  System.ComponentModel.INotifyPropertyChanged
   {
     ...
      public myUserControl()
      {
         InitializeComponent();

         <!--setup keybinding-->
      }

      public void KeyBindExecuted(object sender, ExecutedRoutedEventArgs e)
      {
         Object sb = this.myContentControl.TryFindResource("myDataTemplate");
         //sb returns the DataTemplate
      }

   }
}

<ResourceDictionary>
    <DataTemplate x:Key="myDataTemplate" >
        <Grid>
           <!-- elements like buttons -->
        </Grid>
        <DataTemplate.Resources>
            <Storyboard x:Key="myStoryBoard">
                <DoubleAnimation>
                     <!-- animation stuff-->
                </DoubleAnimation>

            </Storyboard>
        </DataTemplate.Resources>
        <DataTemplate.Triggers>
            <EventTrigger SourceName="aButton" RoutedEvent="Button.Click">
                  <BeginStoryboard Storyboard="{StaticResource myStoryBoard}" />
                </EventTrigger>
        </DataTemplate.Triggers>
    </DataTemplate>
</ResourceDictionary>