image didnt display while export the report to excel

Hi All,

I added image or logo  to webi report ,  After i refresh I am able to view report , When i export the report in excel,Image or logo is not displaying .

Do i need to change server setting ?

With references of  below link , i followed steps

How to add "graphic" images to WEBI r... | BMC Communities

Environment:

Sap bo  3.1 sp7

Thanks,

Raghunath