13 month

[Anonymous]

Hello All

Please help me in the below query. I have the data from Feb'12 to till date.

I need to create a bar graph which picks only last 13 month data.

I have created a variable as

Rolling13 = DATE(MONTHSTART(TODAY(),-13), 'YYYY-MM-DD')

Can some one please guide me how to use it in the below formula

COUNT(CASES) with dimension as  Open Month

Please guide

Regards

DC