I am thinking not to keep any report prompt.
Based on when user runs the report I want to fetch the current date and derive 'rolling 12 months cumulative' and 'rolling 3 years cumulative'.
e,g if they ran the report today 5/9/2016 then
Annual Cumulative = 06/2015 to 05/2016
3yrs Cumulative = 06/2013 to 05/2016
Yes both [Report Year] & [Report Month] are type 'Number'