MDX SSRS Parameter category chooses all sub category

Question

I have been looking all over stackoverflow for this and I can\'t figure it out. So I have a dataset using a SSAS cube, and it has two parameters. It has a category and subcate

Answer 1

As I said in comments you cannot use the Name of your member to slice your cube in MDX, you have to use the unique name instead. You have to handle it so when your user selects Category X and Category Y for your ParamCategory parameter, it should be set to [Service].[Category].&[Category X] and [Service].[Category].&[Category Y]. This is what I'd do.

I'd use an MDX script that returns label (Name) and unique name for populate Category.

WITH MEMBER [Measures].[Category Label] AS
  [Service].[Category].CurrentMember.Name
MEMBER [Measures].[Category UniqueName] AS
  [Service].[Category].CurrentMember.UniqueName
SELECT
{ [Measures].[Category Label], [Measures].[Category UniqueName] } ON COLUMNS,
{} ON ROWS
FROM [Sales-Cube]

In parameter properties / available values you have to use Category Label field for Label field and Category UniqueName for Value field.

The same apprach to populate ParamSubcategory.

WITH MEMBER [Measures].[SubCategory Label] AS
  [Service].[SubCategory].CurrentMember.Name
MEMBER [Measures].[SubCategory UniqueName] AS
  [Service].[SubCategory].CurrentMember.UniqueName
SELECT
{ [Measures].[SubCategory Label], [Measures].[SubCategory UniqueName] } ON COLUMNS,
{ [Service].[SubCategory].[SubCategory] } ON ROWS
FROM [Sales-Cube]
WHERE ( StrToSet ( @ParamCategory ) )

Note I am using ParamCategory to populate the ParamSubcategory only with the related subcategories.

Now you can use those parameters in your MDX script:

SELECT NON EMPTY { [Measures].[Sales Count] } ON COLUMNS,
NON EMPTY
{
  ( [Date].[Fiscal Year].[Fiscal Year].AllMembers )
} Dimension Properties MEMBER_CAPTION,
MEMBER_UNIQUE_NAME ON ROWS
FROM (
  SELECT ( STRTOSET( @ParamSubcategory ) ) ON COLUMNS
  FROM (
    SELECT ( STRTOSET ( @ParamCategory ) ) ON COLUMNS
    FROM [Sales-Cube]
  )
) CELL Properties Value,
BACK_COLOR,
FORE_COLOR,
FORMATTED_VALUE,
FORMAT_STRING,
FONT_NAME,
FONT_SIZE,
FONT_FLAGS

Note Filter and InStr function are not requerid since you are passing the unique name members.

It is not tested but should work, good luck!

Let me know if this helps.