Add Vendor Name to "Invoice Pool Excl. Posting Details" Form

Does any body knows if it is possible without code to add the vendor name to the “Invoice Pool Excl Posting Details” Form, I have tried to add the table and field in the AOT but as far I had it was to add the column “field” but the name that is displaying is not the correct one for the vendor number is in the line. I tried different combinations on Join table and the link type and nothing.

Thanks in advance for you help