Whats wrong with my style?

Question

Im getting a compile error "Error 6 '12' is not a valid value for the 'System.Windows.Documents.TextElement.FontSize'" when I apply my style to a label.  It "looks right", I could use someone elses opinion what is wrong:

<Window x:Class="MoneyClient.RevisedScreen"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:net="clr-namespace:System;assembly=mscorlib"
  Title="Revised Screen" Height="480" Width="600">
  
  <Window.Resources>
    <net:Int32 x:Key="titleFontSize">12</net:Int32>
    
    <Style x:Key="headerStyle" TargetType="Label">
      <Setter Property="FontSize" Value="{StaticResource titleFontSize}" />
      <Setter Property="FontWeight" Value="Bold" />
    </Style>
  </Window.Resources>
  
  <Label Content="Setup" FontSize="12" FontWeight="Bold" Style="{StaticResource headerStyle}"/>

</Window>

Thnx

Mat

Answer 1

The issue is that FontSize on a Label control isn't actually an Int32, it is a double.

Answer 2

Thank you.  and in silverlight 2 I think its an int32, as I was looking a silverlight 2 implementation I did :)  lol. 

Answer 3

Would've been better to say how to easily specify that the number is a double.  Had to go to another site, since I didn't want to have to declare another variable.  

headerStyle.SetValue(Setter.FontSizeProperty, 12D);

I believe would be the equivalent here, if setting it in code-behind (which would be far simpler than that ugly binding property!).