Subtotal in EPM reports Problem

Dear all,

I want to calculate colunm subtotal.

but i don't know how fomulas and my result are incorrect . You can see image below.

Here is my fomula:

=SUM(EPMSELECTEDMEMBERS(COSTCTR))+INDIRECT(ADDRESS(ROW(EPMSELECTEDMEMBERS(P_ITEMS))+ROWS(EPMSELECTEDMEMBERS(P_ACCT))+ROWS(EPMSELECTEDMEMBERS(P_ANALYTIC)),COLUMN(EPMSELECTEDMEMBERS(TIME))))

Please check and help me to correct it.

thanks