How to get image (attachment) stored in MM03 to Smartforms?

I am working on a smartforms that required an image stored in Master Master (MM03).

I looked for examples, which uses CALL FUNCTION 'SAPSCRIPT_GET_GRAPHIC_BDS' to get the image from STXBITMAPS

But the table that seems to be holding the attachment I want is SRGBTBREL not STXBITMAPS.

Please advice on how can I get the attached image for smartforms.

Pawadee K.