12Month Rolling Average with Drill

Hi,

I would like to have a 12 month rolling average with drill.

Currently I can able to get the 12 month rolling average using formula

=NoFilter( (RunningSum([Sales]) - RunningSum(Previous([Sales];12)))/12)

However when I enable the drill , the numbers are not coming as expected .

I tried with the below formula. However it didnt yielded desired output

=NoFilter( (RunningSum([Sales] in section) - RunningSum(Previous(([Sales] in section);12)))/12)

Appreciate support on this

Regards ,

Ben.