How to archive in comeing AS2 Messages

Hi Gurus,

I am new to B2B addon's .I have one requirement like i am picking the data(edi 850,810,860) from client using single sender AS2 adapter in sap pi.

In Sender AS2 channel i have one option like "archiving" using this option i can able to archiving incoming  all data in one folder,but here i would like to know how  to archive separate folders for all incoming  EDI messages like edi850,edi810,edi860.

Please provide the solutions.

Thanks

Kavitha S