title: xceed MaskedTextBox Mask Binding to Greater Than symbol
body: <p>Unable to bind simple text mask in xceed MaskedTextBox</p>
  
  <pre><code>var state = new MaskedEditableTextField(String.Empty, "State", "&gt;LL", rules);
  
  &lt;xctk:MaskedTextBox Value="{Binding Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                              Mask="{Binding TextMask}"
                              ToolTip="{Binding OriginalValue}"
                              ValueDataType="{x:Type s:String}"
                              Style="{DynamicResource ValidatableEditableTextBoxStyle}"/&gt;
  </code></pre>
  
  <p>binding to other masks that don't have the '<code>&gt;</code>' or '<code>&amp;gt;</code>' value work as expected</p>