how to start the animation if the storyboard definition and the corresponding grid inside canvas is in windows.resources tag

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XAML

WPF

C#5.0

i want to start animation in the grid.the grid is inside the canvas tag.both the story board definition and the grid to animate is inside the windows.resources tag.
the code is given below

<Window.Resources>


        <VisualBrush  x:Key="Passport" x:Shared="false" Stretch="Uniform">

            <VisualBrush.Visual>
                <Canvas RenderTransformOrigin="0.5,0.5"  >
                  <Grid Margin="5.397,45.106,5.239,0"  VerticalAlignment="Top" Height="7.801"   x:Name="side_scan_strip" RenderTransformOrigin="0.5,0.5">
                            <Grid.RenderTransform >

                                <TransformGroup>
                                    <ScaleTransform ScaleX="1" ScaleY="1"/>
                                    <SkewTransform AngleX="0" AngleY="0"/>
                                    <RotateTransform Angle="0"/>
                                    <TranslateTransform X="0" Y="0"/>
                                </TransformGroup>
                            </Grid.RenderTransform>
                  </Grid>
                   </Canvas>

            </VisualBrush.Visual>
        </VisualBrush>


            <Storyboard x:Key="Storyboard1" x:Name="Storyboard1">
            <DoubleAnimationUsingKeyFrames x:Name="dak1" BeginTime="00:00:00" Storyboard.TargetName=" side_scan_strip" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)">
                <SplineDoubleKeyFrame KeyTime="00:00:01" Value="109.75"/>
                <SplineDoubleKeyFrame KeyTime="00:00:02" Value="0"/>
                <SplineDoubleKeyFrame KeyTime="00:00:03" Value="109.75"/>
                <SplineDoubleKeyFrame KeyTime="00:00:04" Value="0"/>
            </DoubleAnimationUsingKeyFrames>
             </Storyboard>
</Window.Resources>

the exception i got is :
' side_scan_strip' name cannot be found in the name scope of 'WpfApplication1.MainWindow'.