Dynamic value list that updates automatically - month and year
I am looking for some kind of method to update a value list automatically depending on the month and year you are in.
For example, we are in June-2011. I would like to have a value list starting from 12 month before and 12 month after today.
Starting from 06-2010 ~ 06-2012
Would that be possible? I am thinking some kind of custom function can do this?