Change sender email address for payment advice

Hi,

I used FIBF to activate BTE 2040 to allow me email Payment Advice. This is working well and takes the 'Sender' email address from the user master data. I don't want to use the user master data so does anyone know how/where to change the sender email in the code?

I have copied SAMPLE_PROCESS_00002040 and can implement 2050 if needed but that seems to only modify the text of the mail - not the sender email?

Thanks.