title: MDX Calculated member filter by dimension attribute
body: <p>I want to create a calculated member and filter it by dimension. This is WORKING example:</p>
  
  <pre><code>(
      [Policy].[Policy Status].&amp;[Void], 
      [Policy].[Tran Type].&amp;[Renewal], 
      [Measures].[FK Policy Distinct Count]
  )
  </code></pre>
  
  <p>But if I want to filter it like this</p>
  
  <pre><code>(
      [Policy].[Policy Status].&amp;[Void], 
      [Policy].[Policy Status].&amp;[Policy],  
      [Measures].[FK Policy Distinct Count]
  )
  </code></pre>
  
  <p>Than it's NOT working. It says that same hierarchy is showing multiple times in the tuple.</p>
  
  <p>Another thing is, how to exclude rows? Here's the idea...</p>
  
  <pre><code>(
      ![Policy].[Policy Status].&amp;[Void], 
      ![Policy].[Policy Status].&amp;[Policy],  
      [Measures].[FK Policy Distinct Count]
  )
  </code></pre>