aware_support wroteYou can use a workaround as kklosson suggests, but once again, referring to an image attribute in a tag expression should be enough.
On a form yeah you can just use a tag, but not when he's generating a HTML document surely?
I always thought you'd have to do what kklosson said, export the image to a folder, then use <img src> tags to reference it.
Something along the lines of:
Create a folder under AwareIM called SigFolder
Create a plain text attribute called SigName
Rule 1 = SigName=FILE_NAME(BO.SigAttribute)+FILE_EXTENSION(BO.SigAttribute)
Rule 2 = EXPORT DOCUMENT BO.SigAttribute TO FOLDER '/SigFolder'
in your HTML doc <img src=/SigFolder/<<Bo.SigName>> width="bout this" height="this much">