Hi Ednalynn
Do you use SAP BW? If so then another way of doing this is to set up an RRI link to a detail query.
Thinking of your example, you open an AOLAP workspace to a query that contains sales by year and Country. Use the RSBBS transaction to define an RRI link to the detail query which has year, country, company and invoice number... but use Year as the parameter.
Now in AOLAP, in the first query you right click on the year which you want more detail and in the "Go To" menu you will see the RRI link you created. Click that link and the detail query will appear inside AOLAP... but filtered on the year you right-clicked on.
Kind Regards
Ian