FSG : HOW To display YTD Activity for only one row

Hello expert;

we create un FSG report compound of 1 row sets and column set: PTD,QTD,YTD ,( attached my FSG Listing details)

My concern is that i have rows which have STAT currency and others have a balance sheet accounts, and others rows is calculated by dividing in the STAT Rows.

business request to have for the YTD amount, only YTD activity amount. So to have YTD Activity amount i used the formula: BAL - YTD: this give me the good amount for the balance sheet accounts , but for STAT Rows and calculations Rows this give me n/m amounts.