Cumulated amounts in the Query

Question

Hi Sap Developers,
I need some hints to create a query. I haven't found any solutions until now.
I've got an infocube with amounts grouped by day, which are gonna be displayed in the query using the cumulated format as follows:
1/jan           2/jan              3/jan              4/jan     
Cube  Cumulated      Cube  Cumulated         Cube  Cumulated         Cube  Cumulated
10      10                      11      21                         12      33         13      46
The cumulative period starts on the first day of the month. Only the cumulated values above will be displayed in the query.
When the user selects 3/Jan - 4/Jan, for example, the query should display only the two columns related to these days, regarding that the cumulated amount of 3/Jan and 4/Jan has to be 33 and 46 respectively.
Through Bex, I have to select the whole month to get the expected result. If I input 3/Jan - 4/Jan, for example, the query shows 12 and 25, that is, it starts the cumulative period on the first day displayed in the query.
I've created a customer exit variable tied to a restricted key figure in order to get the cumulated amount from the first day of the month until the day before the date entered by the user. It's worked as far the amounts is concerned, but all the columns are displayed.
I've tried others alternatives, but without success.
Before modifying the infocube structure, I would like to confirm with you if there is any solution for this scenario. Suggestions are welcome.
Regards,
Tiago

Answer 1

Hi SDBI,
Thanks for your reply.
The problem was finally solved.
We used a customer exit variable (CEV1) to the 0CALDAY, as you suggested, with the period from the first day of the month to the initial date defined by the user entry minus one. We created a RKF1 to cumulate the amounts of this period by linking CEV1 to it and setting 0CALDAY as "Constant Selection". Thus all the values related to this period were correctly cumulated into a single column.
After that we needed to establish a way to cumulate the amounts properly along the columns. The following procedure worked fine:
RKF2 was created to get the amounts related to the period entered by the user.
CEV2 was created to get only the initial date defined by the user.
Then we created a formula with 0CALDAY replacement path varible and establish the following logic: if 0CALDAY RPV == CEV2 then formula = RKF1 + RKF2 else formula = RKF2.
Regards,
Tiago