Rolling 12 Months With Set Analysis

[#1]

Hello,

I have an application where the user selected dimensions are Year and Month. I am trying to create a line graph that represents a rolling 12 months based on the user's selection.

median({<CALENDAR_YEAR_MONTH={">=$(=CALENDAR_YEAR_MONTH-11) <=$(=CALENDAR_YEAR_MONTH)"}>} CALC_ARR_TO_EXIT_MINS)

However, I am unable to return values with this calculation.

Any ideas?

Thanks,

Scott