Multiple emails to single vendor

We are sending payment advice to vendor via. email. E mail id's are stored in vendor master. But our issue is that when we store more than one id in the vendor master, e mail is sent only to one id and not to all the id's in the vendor master.

For sending email to vendor, we are using the following function module:

OPEN_FI_PERFORM_00002040_P

The above function module is given in open FI transactions. (FIBF). This picks up only one id even though multiple e-mail id's are there in the vendor master. Can you suggest some other functional module which can pick up multiple id's.

Regards

S.Radhakrishnan