Can you please re-attach your example workbook. It needs to be a .twbx (I think you just have a .twb, which is zipped up...A .twb doesn't contain your data so unable to open it)
Here is a link on how
Let me know when you have and I'll be happy to take a look.
...I think this is what we want to do
but can't be sure till I see your data/example.
You can create a calculated field with a series of IF statements (or CASE statements) using your parameter, then drag this new dimension onto the rows/columns shelves
Make sure this new calculated field is a discrete dimension
filter by parameter.twbx 1.4 MB