Cascading Parameter with Case or If statement using MDX

Question

Hi,
I have a Parameter "Freq"
and have 2 drop down values – Yearly & Quarterly ,
If Quarterly is selected … "Code" needs to be populated from [Format].Quarterly Code
If "Yearly" is selected then needs to be populated from [Format].Code
for the below DataSet Query.
Any help....
WITH 
  MEMBER [Measures].[ParameterCaption] AS 
    IIF
      [Format].[Code].CurrentMember.Member_Caption = ""
     ,"UNKNOWN"
     ,[Format].[Code].CurrentMember.Member_Caption
  MEMBER [Measures].[ParameterValue] AS 
    [Format].[Code].CurrentMember.UniqueName 
  MEMBER [Measures].[ParameterLevel] AS 
    [Format].[Code].CurrentMember.Level.Ordinal 
SELECT 
    [Measures].[ParameterCaption]
   ,[Measures].[ParameterValue]
   ,[Measures].[ParameterLevel]
  } ON COLUMNS
 ,[Format].[Code].ALLMEMBERS ON ROWS
FROM 
  SELECT 
          [Format].[Code].&[I]
         ,[Format].[Code].&[N]
         ,[Format].[Code].&[D]
         ,[Format].[Code].&[I]
 ,[Format].[Code].&[A]
         ,[Format].[Code].&
    } ON COLUMNS
  FROM [ABC]

Answer 1

Hi ,
  If you are looking for dynamically concatenating the MDX try using an expression in the dataset itself. If the MDX is very complex in nature and do more operations to construct the MDX you can use custom code itself.
Example for Expression 
http://sqlblog.com/blogs/stacia_misner/archive/2010/10/08/29249.aspx
Example for custom code
http://www.purplefrogsystems.com/blog/2008/09/dynamic-mdx-in-reporting-services/
Best Regards Sorna