Epm Retrive Data

hi,

In my Report ,

I used Epmretrivedata function for both PERIODIC  and YTD ,but here i get values for only YTD only not for PERIODIC.

when selecting PERIODIC ...cell---Right click----EPM----RefershSelectedData then i get value ,

again Refresh complete Refresh sheet ,then i get zeros"s(0).

can help me any one .

Thanks in advance,

Yeshwanth Billakanti