KPI errors in ax2009

hai all

i installed ep sucessfully and i processed cube also sucessfully, whn i open EP website am getting the following error

in CFO operational efficiency report

An error has occurred during report processing. (rsProcessingAborted) Get Online Help Query execution failed for dataset ‘OperationalEfficiency’. (rsErrorExecutingCommand) Get Online Help Query (2, 1) The ‘Accounts Receivable Days Outstanding’ argument passed to the ‘KPIVALUE’ function must be a Key Performance Indicator (KPI) name.

can anyone help me,

thanx in advance

anyone help me plzzzzzzzzzzzzzzzzz