How to Export file with dynamic name ( ex:- system date) from SAP BPC MS

Hi,

I need to create an automatic job to export files with unique names ( Ex:- system date_name). The job will run once every night. Essentially, I would like to have a package run, where it will title the exported .txt file as DDMMYY_Export, where the date will change, and the files will not overwrite prior day files.I can not see any option in data manager to do this until i am missing something. Can someone please help.

Thx

Sam