title: Trigger doesnt want to work. However it does work well when in style
body: <pre><code>&lt;Button Name="btnNewGame" Margin="120,292,450,180" Style="{StaticResource mainLobbyBtnStyle}"&gt;
          &lt;Grid Height="35" Width="200"&gt;
              ...
              &lt;Line Name="lineNewGame" X1="200" X2="200" Y1="0" Y2="35" ... /&gt;
          &lt;/Grid&gt;
          &lt;Button.Trigger&gt;
              &lt;Trigger Property="IsMouseOver" Value="true"&gt;
                  &lt;Setter Property="Content" Value="qwerty"/&gt;
              &lt;/Trigger&gt;
          &lt;/Button.Triggers&gt;
  &lt;/Button&gt;
  </code></pre>
  
  <p>I get "'<em>IsMouseOver</em>' member is not valid because it does not have a qualifying type name". Need help in fixing this.</p>
  
  <p>And second question.
  Can i change parameters of <em>lineNewGame</em> in my button trigger? How?</p>