FSG CPOI for columns

The CPOI is a great feature in FSG that allows the column to keep the constant period regardless of period the report is been run. I recently started to use it with columns where the amount type is 'Actual' e.g. PTD, QTD actual.

I wanted to know if this can also work for amount type of 'Budget' e.g PTD-Budget? I have requirement for some columns to retrieve constant month data for some budget and not sure how to populate control value. Please let me know if anyone has done this or if the CPOI works with budgets also.