I tried this formula and did group on it still not working
//If MOnth({?Date}) = Month(Currentdate) then 1
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-1,{?Date}))then 2
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-2,{?Date}))then 3
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-3,{?Date}))then 4
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-4,{?Date}))then 5
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-5,{?Date}))then 6
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-6,{?Date}))then 7
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-7,{?Date}))then 8
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-8,{?Date}))then 9
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-9,{?Date}))then 10
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-10,{?Date}))then 11
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-11,{?Date}))then 12
//else if MOnth({Command.ADDED_DT}) = Month(DateAdd("m",-12,{?Date}))then 13