This sounds like a simple case statement using a parameter:
Case [Parameter choose Measure]
when 1 then [measure1]
when 2 then [measure2]
when 3 then [measure3]
when 4 then [measure4]
You then use this calculated field (which is driven by the parameter) as the measure on your rows shelf.
I figured it out. I needed to leave one of groups out of the parameter to get to work. It does what I need it to do. Thank you for your input. I was actually doing it the right way.