Trouble with DoubleAnimation

Question

I have a problem when I try to animate these toggle button, because when you get to press random buttons, does not stop the animation and that means that I will not close the open panel but if you move the positions of the buttons that are more it down. The effect I want is that when you press the first button panel with answers opens when you press the second closes the first and the second is opened so on. It now works fine, the problem is when you start to press randomly, control no animation finishes executing, and that means it does not close the open panel but if you move the positions of the other toggle button and overlap. Looking at the code, I could see that fails to execute the animation, do not understand the reason for not it throws any errors, simply does not work well.

<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Panel.ZIndex="0">
    <Border Canvas.Top="170" Height="71" CornerRadius="10" Name="border1" VerticalAlignment="Top" Panel.ZIndex="0"
          BorderBrush="#FFFF7800" BorderThickness="2" Background="#FFFF7800" Canvas.Left="25" Width="649">
            <Border.BitmapEffect>
                <OuterGlowBitmapEffect GlowColor="#FFFF7800" GlowSize ="10" Noise="0.7" Opacity="0.8" />
            </Border.BitmapEffect>
            <Border.Triggers>
                <EventTrigger SourceName="boton_activar" RoutedEvent="ToggleButton.Checked">
                    <BeginStoryboard>
                        <Storyboard Name="mostrar_panel">

                            <DoubleAnimation  Storyboard.TargetName="border2" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border3" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border4" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border5" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />



                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetProperty="(Canvas.Top)"  To="170" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border2" Storyboard.TargetProperty="(Canvas.Top)"  To="250" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="330" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.2"  />

                            <DoubleAnimation BeginTime="0:0:0.4" Duration="0:0:0.2" Storyboard.TargetProperty="Height" To="180" />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border2" Storyboard.TargetProperty="(Canvas.Top)"  To="360" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="440" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="520" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="600" Duration="0:0:0.2"  />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
                <EventTrigger SourceName="boton_activar" RoutedEvent="ToggleButton.Unchecked">
                    <BeginStoryboard Name="ocultar_panel">
                        <Storyboard>
                            <DoubleAnimation Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />

                            <DoubleAnimation Storyboard.TargetName="border1" Storyboard.TargetProperty="(Canvas.Top)"  To="170" Duration="0:0:0.2"  />
                            <DoubleAnimation Storyboard.TargetName="border2" Storyboard.TargetProperty="(Canvas.Top)"  To="250" Duration="0:0:0.2"  />
                            <DoubleAnimation Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="330" Duration="0:0:0.2"  />
                            <DoubleAnimation Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.2"  />
                            <DoubleAnimation Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.2"  />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Border.Triggers>
            <Grid Margin="3">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="10*"></RowDefinition>
                    <RowDefinition Height="20"></RowDefinition>
                </Grid.RowDefinitions>
                <Canvas>
                    <TextBlock Text="¿Pregunta 1?" FontSize="20" Foreground="#FFFFFF" Canvas.Left="91" Height="39" Width="537" Canvas.Top="15"/>
                </Canvas>



                <ToggleButton  VerticalAlignment="Top"  HorizontalAlignment="Left" Name="boton_activar" Opacity="1" Background="#FFFF7800" BorderBrush="#FFFF7800" Height="61" Width="91" Grid.RowSpan="2" BorderThickness="0">
                    <Canvas>
                        <Ellipse Fill="White" Height="50" Width="50" HorizontalAlignment="Left" Canvas.Left="-31" Canvas.Top="-25" >

                        </Ellipse>

                        <TextBlock Text="1" Foreground="#132459" FontSize="35" Canvas.Left="-15" Canvas.Top="-26"></TextBlock>
                    </Canvas>


                </ToggleButton>

                <StackPanel Grid.Row="1">
                    <Canvas>
                        <TextBlock Text="Respuesta 1" Canvas.Left="94" Canvas.Top="72" Foreground="White" FontSize="20" Height="40" Width="223">
                            <TextBlock.BitmapEffect>
                                <OuterGlowBitmapEffect GlowColor="#FFFFFF" GlowSize ="10" Noise="0.2" Opacity="0.4" />
                            </TextBlock.BitmapEffect>
                        </TextBlock>
                    </Canvas>


                </StackPanel>
            </Grid>
        </Border>
    </Canvas>
<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Panel.ZIndex="0">
        <Border Canvas.Top="250" Height="71" CornerRadius="10" Name="border2" VerticalAlignment="Top" 
          BorderBrush="#FFFF7800" BorderThickness="2" Background="#FFFF7800" Canvas.Left="25" Width="650">
            <Border.BitmapEffect>
                <OuterGlowBitmapEffect GlowColor="#FFFF7800" GlowSize ="10" Noise="0.7" Opacity="0.8" />
            </Border.BitmapEffect>
            <Border.Triggers>
                <EventTrigger SourceName="boton_activar_2" RoutedEvent="ToggleButton.Checked">
                    <BeginStoryboard>
                        <Storyboard Name="mostrar_panel_2">

                            <DoubleAnimation  Storyboard.TargetName="border1" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />

                            <DoubleAnimation  Storyboard.TargetName="border3" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border4" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border5" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />

                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border1" Storyboard.TargetProperty="(Canvas.Top)"  To="170" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetProperty="(Canvas.Top)"  To="250" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="330" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.2"  />


                            <DoubleAnimation BeginTime="0:0:0.4" Duration="0:0:0.2" Storyboard.TargetProperty="Height" To="180" />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="440" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="520" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="600" Duration="0:0:0.2"  />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
                <EventTrigger SourceName="boton_activar_2" RoutedEvent="ToggleButton.Unchecked">
                    <BeginStoryboard Name="ocultar_panel_2">
                        <Storyboard>

                            <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetProperty="Height" To="71"/>


                            <DoubleAnimation Storyboard.TargetName="border3" Storyboard.TargetProperty="(Canvas.Top)"  To="330" Duration="0:0:0.4"  />
                            <DoubleAnimation Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.6"  />
                            <DoubleAnimation Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.8"  />

                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Border.Triggers>
            <Grid Margin="3">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="10*"></RowDefinition>
                    <RowDefinition Height="20"></RowDefinition>
                </Grid.RowDefinitions>
                <Canvas>
                    <TextBlock Text="¿Pregunta 2?" FontSize="20" Foreground="#FFFFFF" Canvas.Left="91" Height="39" Width="537" Canvas.Top="15"/>
                </Canvas>



                <ToggleButton  VerticalAlignment="Top"  HorizontalAlignment="Left" Name="boton_activar_2" Opacity="1" Background="#FFFF7800" BorderBrush="#FFFF7800" Height="61" Width="91" Grid.RowSpan="2" BorderThickness="0">
                    <Canvas>
                        <Ellipse Fill="White" Height="50" Width="50" HorizontalAlignment="Left" Canvas.Left="-31" Canvas.Top="-25" >

                        </Ellipse>

                        <TextBlock Text="2" Foreground="#132459" FontSize="35" Canvas.Left="-15" Canvas.Top="-26"></TextBlock>
                    </Canvas>


                </ToggleButton>

                <StackPanel Grid.Row="0">
                    <Canvas>
                        <TextBlock Text="Respuesta 2" Canvas.Left="94" Canvas.Top="72" Foreground="White" FontSize="20" Height="40" Width="223">
                            <TextBlock.BitmapEffect>
                                <OuterGlowBitmapEffect GlowColor="#FFFFFF" GlowSize ="10" Noise="0.2" Opacity="0.4" />
                            </TextBlock.BitmapEffect>
                        </TextBlock>
                    </Canvas>


                </StackPanel>
            </Grid>
        </Border>
    </Canvas>
<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Panel.ZIndex="0">
        <Border Canvas.Top="330" Height="71" CornerRadius="10" Name="border3" VerticalAlignment="Top" 
          BorderBrush="#FFFF7800" BorderThickness="2" Background="#FFFF7800" Canvas.Left="25" Width="650">
            <Border.BitmapEffect>
                <OuterGlowBitmapEffect GlowColor="#FFFF7800" GlowSize ="10" Noise="0.7" Opacity="0.8" />
            </Border.BitmapEffect>
            <Border.Triggers>
                <EventTrigger SourceName="boton_activar_3" RoutedEvent="ToggleButton.Checked">
                    <BeginStoryboard>
                        <Storyboard Name="mostrar_panel_3">

                            <DoubleAnimation  Storyboard.TargetName="border1" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border2" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border4" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />
                            <DoubleAnimation  Storyboard.TargetName="border5" Storyboard.TargetProperty="Height"  To="71" Duration="0:0:0.2"  />

                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border1" Storyboard.TargetProperty="(Canvas.Top)"  To="170" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border2" Storyboard.TargetProperty="(Canvas.Top)"  To="250" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetProperty="(Canvas.Top)"  To="330" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.2" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.2"  />


                            <DoubleAnimation BeginTime="0:0:0.4" Duration="0:0:0.2" Storyboard.TargetProperty="Height" To="180" />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="520" Duration="0:0:0.2"  />
                            <DoubleAnimation BeginTime="0:0:0.4" Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="600" Duration="0:0:0.2"  />

                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
                <EventTrigger SourceName="boton_activar_3" RoutedEvent="ToggleButton.Unchecked">
                    <BeginStoryboard Name="ocultar_panel_3">
                        <Storyboard>

                            <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetProperty="Height" To="71"/>



                            <DoubleAnimation Storyboard.TargetName="border4" Storyboard.TargetProperty="(Canvas.Top)"  To="410" Duration="0:0:0.4"  />
                            <DoubleAnimation Storyboard.TargetName="border5" Storyboard.TargetProperty="(Canvas.Top)"  To="490" Duration="0:0:0.6"  />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Border.Triggers>
            <Grid Margin="3">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="10*"></RowDefinition>
                    <RowDefinition Height="20"></RowDefinition>
                </Grid.RowDefinitions>
                <Canvas>
                    <TextBlock Text="¿Pregunta 3?" FontSize="20" Foreground="#FFFFFF" Canvas.Left="91" Height="39" Width="537" Canvas.Top="15"/>
                </Canvas>



                <ToggleButton  VerticalAlignment="Top"  HorizontalAlignment="Left" Name="boton_activar_3" Opacity="1" Background="#FFFF7800" BorderBrush="#FFFF7800" Height="61" Width="91" Grid.RowSpan="2" BorderThickness="0">
                    <Canvas>
                        <Ellipse Fill="White" Height="50" Width="50" HorizontalAlignment="Left" Canvas.Left="-31" Canvas.Top="-25" >

                        </Ellipse>

                        <TextBlock Text="3" Foreground="#132459" FontSize="35" Canvas.Left="-15" Canvas.Top="-26"></TextBlock>
                    </Canvas>


                </ToggleButton>

                <StackPanel Grid.Row="0">
                    <Canvas>
                        <TextBlock Text="Respuesta 3" Canvas.Left="94" Canvas.Top="72" Foreground="White" FontSize="20" Height="40" Width="223">
                            <TextBlock.BitmapEffect>
                                <OuterGlowBitmapEffect GlowColor="#FFFFFF" GlowSize ="10" Noise="0.2" Opacity="0.4" />
                            </TextBlock.BitmapEffect>
                        </TextBlock>
                    </Canvas>


                </StackPanel>
            </Grid>
        </Border>
    </Canvas>