Since your query already seems to take into account the user, I think you can use the @user-id built-in field in the SSRS report to populate an internal...

CAVEAT: I haven't tried this yet, but based on past experience I think it would work:

Try putting the indicator and a textbox displaying your formula in the same rectangle to...

I think you want to do some research on something called "dynamic grouping", it will let you use the same dataset and group based on a user-selected parameter.

One good page...