WPF ListBoxItem DataTemplate

Question

Hi,

I have a list box where I set the items to be in a wrappanel in the ItemsPanel.

Essentailly Im trying to have the item scale larger as the mouse moves over the item (Using EventTriggers animation). However since the items are in a warp panel, when they scale, the item is obscured by the next item in the listbox. I have tried chaigng the Panel.ZIndex of the ListBoxItem but this does not work.

Any ideas?

Below is the folowwing code

                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="Mouse.MouseLeave">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Storyboard.TargetName="imgFilmStripScaleTransform" Storyboard.TargetProperty="ScaleX"  Duration="0:0:0.3">
                                    </DoubleAnimation>
                                    <DoubleAnimation Storyboard.TargetName="imgFilmStripScaleTransform" Storyboard.TargetProperty="ScaleY"  Duration="0:0:0.3">
                                    </DoubleAnimation>                                  
                                                                           <Int32Animation Storyboard.TargetName="filmStripBorder" Storyboard.TargetProperty="(Panel.ZIndex)" To="1" Duration="0:0:0.3">
                                    </Int32Animation>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                    </Border.Triggers>
                </Border>