Hi,
I wonder how the user can filter on Fiscal Period. I don't see such a field in the source data.
Anyway, I think that 12 Formula Variables will be necessary to dynamically determine if the respective amount field should be taken into account. The logic should set a multiplier of 1 if the period lies inside the range and 0 if not.
You need then 12 "period" Calculated Key Figures where you multiply the respective amount with the respective Formula Variable (i.e. the multiplier).
Finally, you need another "cumulative" Calculated Key Figure to add up the 12 "period" Calculated Key Figures.
Best regards,
Sander