Email HTML file

Hi All,
I have a HTML file output. I need to email HTML file from SAP ABAP program.

Custom Program will use standard Function Module - SO_NEW_DOCUMENT_ATT_SEND_API1. In the program, how to append
internal table for storing binary contents (CONTENTS_HEX). Since already a output HTML file exist, I need a help in filing the internal table.

Thank you.

With Regards,
Gandhi Subramani