Problems with AddRelatedFile2

I'm trying to send emails with a signature, it's a JPG file, and I want to embed in email foot.

I'm writing one cid in Html code img src='cid:Signature'

And after I make ::oMail:AddRelatedFile2( cSignatureFile, "Signature" )

However the email is received, the file is attached, but there is a "missing image" block in the body where the image is supposed to be in the body of the mail?

Wath's the problem.

Thanks.

How can the relative addressing work? Assuming the example is correct... or what else could be wrong?

Thanks!