Problem in Calculated Key Figure

Hi Team ,

I have a Problem in Query Report , I am using the calculated Key figure to reterive the maximum value and minimum value of the shopping chart but it is giving wrong values and it is picking the total even when i am specifiying it in Exception Aggregation with miminum and maximum and for refrence charactertics i am using the shopping cart as the field.

Please suggest me how to solve this issue.

Thanks

Raju