Dear all,
I tried using the above method which actually didn't work 
I need to restrict the no of months to latest 3 months(current month),previous month and its previous month) for the first time login. This should happen dynamically.
I tried by referring "How to Use Arrays for trailing months". But still it didn't work. The month start date format of mine is in YYYY-MM-DD
Can anybody help me regarding this?
Archana