same expression in two different charts but getting totals different

[naveen_kunuru]

Hello All,

              kindly suggest me what i am missing in my expression please

i have a straight table chart with

                                           3-   Dimensions: p_Material

                                                                   VENDOR CODE

                                                                   CATEGORY DESCRIPTION1

                                             1- Expression:

  sum(aggr(Avg({<BVALIDFROM={"<$(=Date(yearstart(today(),0,4),'DD-MM-YYYY'))"},BVALIDTO={">$(=Date(yearstart(today(),0,4),'DD-MM-YYYY'))"}>}distinct BPrice)*sum(VOLUME),p_Material,[VENDOR CODE]))

what i am doing is avg  of BPrice * sum of Volume  group by p_Material,Vendor code.......

the  Total i am getting is :33478046

when i tried to implement the same in bar chart with

                                              1- Dimension :  CATEGORY DESCRIPTION1

                                               1- Expression(Same):

  sum(aggr(Avg({<BVALIDFROM={"<$(=Date(yearstart(today(),0,4),'DD-MM-YYYY'))"},BVALIDTO={">$(=Date(yearstart(today(),0,4),'DD-MM-YYYY'))"}>}distinct BPrice)*sum(VOLUME),p_Material,[VENDOR CODE]))

then Total i am getting is :3470522589.32

Even thought i am using the same expression and same dimension i am getting two different total .Is that because of aggregation?