PAst 12 months in design stduio for chart version 2.1

HI,

I have searched couple of posts to display last 12 months in design studio for chart i didnt get any solution could any one help me

i have cal year month (SEPT 2016,DEC2016 ......)

want to filter this dimension to filter last 12 months .due to some restrictions we cant do in backend

any help would be helpful

Thanks,

Varun