title: Reporting services + sort expression
body: <p>Greetings, 
  In my reporting services I would like to add sorting. Is there any way I can add sorting by two fields inside one column's sort expression? something like:</p>
  
  <pre><code>=Fields!SomeValue1.Value
  =Fields!Somevalue2.Value
  </code></pre>
  
  <p>when I use this sort expression, values are not sorted correctly. 
  Values I would like to sort are something like</p>
  
  <pre><code>SomeValue1    SomeValue2
  10            11
  9             1
  20            21
  13            12
  13            7
  17            6
  </code></pre>
  
  <p>The case is that SomeValue1 and SomeValue2 comes from another value that as follows:</p>
  
  <pre><code>10-11
  9-1
  20-21
  13-12
  13-7
  17-6
  </code></pre>
  
  <p>Any help would be appreciated. </p>