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Привожу кусок по WebI. Если у вас толстый клент, то синтаксис немного различается. В список измерений, по которым должен происходить сброс расчета надо вставить измерение секции и если надо еще и другие

С уважением, Стулов Александр
BI Partner


RunningSum

Description

Returns the running sum of a set of numbers

Function Group

Aggregate
Syntax
number RunningSum([measure];[Row|Col];[(reset_dimensions)])
Input

[measure]


Any measure

Row|Col


The calculation direction (optional)

reset_dimensions


The list of dimensions used to reset the running sum (optional)
Output
The running sum of the set of numbers



Example

RunningSum([Revenue]) returns these results in the following table:

...

RunningSum([Revenue];([Country])) returns these results in the following table:

...



Notes

*

You can use extended syntax context operators with the RunningSum() function (see Defining the Calculation Context).
*

You can set the calculation direction with the ROW and COL operators (see Row and Col Operators).
*

If you apply a sort on the measure referenced by the RunningSum() function, Web Intelligence applies the sort to the measure first, then calculates the running sum.
*

You must always place dimensions in parentheses even if there is only one dimension in the list of reset dimensions.
*

When you specify a set of reset dimensions you must separate them with semi-colons.
*

RunningSum() does not automatically reset the sum after a block break.

Тогда
http://]http://support.businessobjects.com/documentation/product_guides/default.asp

И выбирай себе по вскусу

С уважением, Стулов Александр
BI Partner