Fix reference column to export to PDF

[Draculam]

Hello. I need help composing a PDF document.

 1- I am exporting customer purchase data to PDF, in this we have the customer's general data and a table. This table contains the name of the purchase, date of purchase, value and supplier;

 2 - The supplier is a reference to another table, which has a Label currently appearing in the application, but when I export it to PDF the ID appears, not the Label.

 How do I correctly export Supplier Labels to the PDF table?