Using BCS to send email sets priority to high

Sorry guys. This is proabably more of an ABAP question. I have this posted in ABAP forum also, but since I'm doing this from a BSP app, and there are no answers from that forum I'll check with the experts here.

I'm using the BCS classes to send email to trade partners. Some trade partners receive the emails as high priority (Ex. xxxx@hotmail.com)even though the priority is set to low (i_importance = '9'). I am creating the document as follows:

document = cl_document_bcs=>create_document(

i_type = 'RAW'

i_importance = '9'

i_text = lt_textbody

i_length = lv_len_textbody

i_subject = cv_subject ).

This is occurring whether I set i_importance = 1 thru 9.

I can email to the same address via workplace and the priority is normal.

HELP!

Brant