Sure, we can do rolling ranges, but it doesn't work with 'This Month', a
variable date range. I have to manually construct the same custom range
for 'Last Month' and 'Same Month Last Year'... carefully macthing up the
same # of Days. Another great idea is creating 'Same Days Last Month'
and 'Same Days Last Year'. Thanks for considering this ide... it would
save me a lot of work !