Restricted Data in Report Painter (FGi4)

Hi Gurus,

I have created one report painter report in FGI0, FGi4. Which is showing monthly trend of gl accounts cost center wise.

How can i restrict report to show actual amount only upto the period i entered in selection? If i enter period 3 in selection, it should show data in Jan, Feb and March only not in other columns. Right now it is showing data for all 12 months. I want data Actual and plan till the period i entered in  selection.

Appreciate your help.

Thank You