Analysis :: To Get Value Of A Member Passed As Parameter In SSAS MDX

I have a requirement to show the parent value which is passed and also all the leaf member details in  MDX. For example in Adventure works, if I pass Bikes as the value in MDX, the results should display Bikes along with All the child member names as a measure value in SSAS MDX. I only have one hierarchy with Product Category-> Subcategory-> Product.
 
I am trying to use the following MDX but I am getting all the members. I need to get only Bikes in my report.
 
WITH MEMBER [Prod_Passed] AS SETTOSTR(AXIS(1))
MEMBER [Prod_Child] AS DESCENDANTS ([Dim Product].[Hierarchy].CURRENTMEMBER,,LEAVES).item(0).NAME
MEMBER [Child_Value] AS ([Dim Product].[Hierarchy].CURRENTMEMBER,[Measures].[Sales Amount])
SELECT [Dim Product].[Hierarchy].[Product Category].&[1] * [Dim Product].[Product Key].[Product Key].MEMBERS ON ROWS,
{[Measures].[Sales Amount],[Prod_Passed],[Prod_Child],[Child_Value]} ON COLUMNS FROM
[AdvWorks]