oBusinessPartners missing MailBlock

Hello all.

I'm trying to add a new BP to SBO using the oBusinessPartners object and DIServer. It works great but I have one minor problem. I can't find any fields in the oBusinessPartners-XML where I can add the Block field on the Mail address. I have fields for MailStreet, MailZipCode and more, but no MailBlock field. Is this field names something else?

Thanks

Endre