In order to calculate a "baseline," whatever Run Name a user selects in a list box, I have QV average the No. of Runners of the 12 *previous* Run Name(s) (and not including the selected Run Name). In otherwords, if they choose "June 2012 Run," QV averages the No. of Runners from the Run Name of May 2011 Run to May 2012 Run. Likewise, if they choose "August 2011 Run," No. of Runners will be averaged from Run Name "May 2011 Run" to "July 2011 Run."
That said, I have all of my aggregation functions working properly, however I want to *display* the Run Names contained in the baseline within a Text Box saying (in the Case of choosing "August 2011 Run"):
Baseline is calculated from the "May 2011 Run" to "July 2011 Run."
A couple of other twists:
1. The average should not exceed the 12 "Run Name." In other words, in my average calculations, if user selects "September 2012 Run" the baseline average will be from "August 2011 Run" to "August 2012 Run"