title: MDX Calculated Members not recognised
body: <p>I am using Mondrian.</p>
  
  <p>When I use following query :</p>
  
  <pre><code>with MEMBER [Added_On].[2011].[4].[tot] AS
   '[Added_On].[2011].[4].[4]+[Added_On].[2011].[4].[5]'
    select
   {[Added_On].[2011].[4].[tot] } on columns, 
  {([Measures].[Count])} on rows from Transactions 
  </code></pre>
  
  <p>I get error which says :</p>
  
  <pre><code>Mondrian Error:MDX object '[Added_On].[2011].[4].[tot]' not found in cube 'Transactions'
  </code></pre>
  
  <p>Could someone please point out errors?</p>
  
  <p><code>Added_On</code> is a time dimension.
  I used schema workbench to make a schema for this.
  Rest has been working fine till now.</p>