Edit mails through workflow

Hi all,

I am using BO : SOFM and method : COMPOSE in my workflow. The user uses this step to seek clarification for PO or PR. now the user wants to see the reply and also what he has sent previously in workflow itself.

Is there any other method in BO : SOFM that can be used to edit the previously sent object or is there any other BO that serves the same purpose?

Pls let me know as i am not able to execute the method EDIT in Bo : SOFM.

Thanks,

Raj