MDX: Top 10 with filtered members - jasper-reports

Question

I'm creating a report for JasperServer in iReport. I am creating a report with the top 10 companies with most product downloads of the selected products. Users can select in JasperReports which products with a list (parameter {$P{ProductFormat}}).
My dimension for products has the following structure: [Product].[ProductFactory].[ProductType], so input for the parameter for example can be: [Product].[ProductCategory1].[Product1], [Product].[ProductCategory2].[Product2], ... I also want those products available as rows so I can use them as fields in iReport. (product in where is not an option)
SELECT
NON EMPTY {
[Measures].[Orders]
} ON COLUMNS,
NON EMPTY
Crossjoin({TopCount({[USER_COMPANY].[Company].Members}, 10, [Measures].[Orders])}, {$P{ProductFormat}})
ON ROWS
FROM [Products]
WHERE $P{DateFilter}
This query return the top 10 companies of all products with the data filtered per products. I want a top 10 companies of the selected products, but I can't get it to work with topcount and as a row.

Answer 1

This query against AdvWrks via SSMS seems to work ok:
WITH
SET [ProductFormat] AS
{
[Product].[Product Categories].[Category].[Bikes]
,[Product].[Product Categories].[Category].[Clothing]
,[Product].[Product Categories].[Category].[Components]
}
SELECT
[Measures].[Reseller Sales Amount] ON 0
,Generate
(
[ProductFormat]
,
[Product].[Product Categories].CurrentMember
*
TopCount
(
[Geography].[Geography].[City].MEMBERS
,5
,[Measures].[Reseller Sales Amount]
)
) ON 1
FROM [Adventure Works];
It returns the following:
If I add a WHERE clause like the following then it seems to be context aware:
WHERE [Date].[Calendar].[Calendar Year].&[2006];