Hi Alnoor,
This will help you..
http://scn.sap.com/thread/328840
You may try this too:
1) Go to SE38 program RS_PREC_PLAN ( Precal TEST program). Enter the Technical id and the Variant (this is mandatory) for the workbook and execute by entering the emai id..You will receive the workbook as the attachment with the File name and not technical id..
2) The only issue here is the subject of the mail will always be TEST..
3) Create a copy of this program Z_RS_PREC_PLAN and have the Subject and date field in the Selection screen..You can make changes so that the date and the Text for the subject will be populated with the values you enter in the selection screen..
Regards,
Loed