Dynamic Dates in Design Studio

Hi everyone,

I am new to SAP BO Design Studio.I have a start date ,end date,calendar date,current date,and have a from and to date propmts in the report.

I have to show by default 3 months data.I need this to dynamically change the current date and its previous 3 months.After that according to the strt date nd end date that is being selected,chart should get filtered.

How can I achieve this? I have referred How to use arrays for finding trailing months.

Regards

Archana