Set Variable Based on Value List
I am trying to set a variable REGION based on whether or not another variable STATE is found in a value list of each of the states in various regions. E.g. Value List Region_Northeast contains [CT, DE, ME, MD, MA, MJ, NY, PA, RI, VT], with a similar list for each region. So if the user enters in CT into the field STATE, I want to automatically set REGION to "Northeast" and likewise for each region. What is the best way to do this?