Avg Sales Amount

Hello 

     Find customer names whose amt is greater than CY2010avg sales amt.

                with member [Measures].[Avg Sales Amount] as

avg( ([Date].[Calender Yr to Date].[Month].&[201001] :

      [Date].[Calender Yr to Date].[Month].&[201012])

,[Measures].[Internet Sales Amount])

select {[Measures].[Internet Sales Amount],[Measures].[Avg Sales Amount]} on columns,

filter({[Customer].[Customer Geography].[Customer].members},

([Measures].[Internet Sales Amount] > [Measures].[Avg Sales Amount]))

 on rows

from  [SSAS2008SBS];

When i am executing this i am getting the following error

Infinite recursion dectected.The loop of dependencies is: Avg Sales Amount -> Avg Sales Amount

anybody plz help me