How to create dynamic Rollup Reports

Hello All,

I need to create a BeX query with two sets of key figures -

Part 1 will have key figures which are calcualted for given fiscal period selection. (Interval)

Part 2 will have key figures which are calcualted for last 12 months - Rolling values for 12 months

Fiscal Period needs to be in columns so that user should be able to see the period-wise values.

Example: If user gives 005.2013 - 008.2013 as input for fiscal period selection,

For Part 1: Monthly values will be shown for part 1 of key figures.

For part 2: I need to show rolling values for each month.

As per above example, Query structure is like this

Fiscal year/Period       005.2013    006.2013   007.2013   008.2013

Part 1 key figures --    Monthly values in each column for respective fiscal period

Part 2 KF - Rolling values for May - Rolling Values for June - Rolling Val for July - Rolling Val  for Aug

                 006.2012-005.2013       007.2012-006.2013        008.2012-007.2013   009.2012 - 008.2013

Since fiscal period selection is dynamic - user input - no of columns will change accordingly.

Thanks in advance.