How to change the value of COMPANY_NAME in "Subject:%COMPANY_NAME% Welcome to SAP Sourcing

Hi All,

Can some tell me How will I change the value of COMPANY_NAME which will reflect in subject of Final mail.

For more clear picture the subjectis"

Subject:%COMPANY_NAME% Welcome to SAP Sourcing .

The change vlaue of COMPANY_NAME should refleat in final subject of the mail.

Please help me in urgent.

Thanks

peeyush ranjan