Changing Pivot Table Headers when Filters Change

I am building a model where when regions will be selected via a filter in a slicer but need it to change which field is brought in depending on which region is selected. In other words, I want the slicer to stay so that you can easily select the region, but I need the column headers in the pivot to change when the region does. So when "Region B" is selected in the filter, "Region B Grouping" shows up in the columns instead of "Region A Grouping" since it would be a pain (and easy for other people looking at the model to make a mistake) to have to change what goes in the column each time. Is this possible?