blank needed for cumulative Key Figure

Hi All,

here's what my BEx report looks like when I run (after 10AM and before 11AM)::

---------------------------------------------------------

Hour            Qty          CumulativeQty

--------------------------------------------------------

7AM            10                    10

8AM            20                    30

9AM            15                    45

10AM          13                    58

11AM                                  58

12PM                                  58

--------------------------------------------------------

But, here's what my BEx report should look like when I run (after 10AM and before 11AM)::

---------------------------------------------------------

Hour            Qty          CumulativeQty

--------------------------------------------------------

7AM            10                    10

8AM            20                    30

9AM            15                    45

10AM          13                    58

11AM                                         

12PM                             

--------------------------------------------------------

Any suggestions