I have a list called LISTA DE MATERIAIS, list has the following columns: MATERIAL, NOME DO MATERIAL, UMB.
In my form need only get these 3 fields in this list.

then on my list is an example:
MATERIAL       NOME DO MATERIAL          UMB
  1                               A                            un
  2                               B                            un
  3                               C                            pac
  4                               D                            pac

My form in the drop-down field is filtered by MATERIAL but appears NOME DO MATERIAL and selecting wanted to pull the value UMB of MATERIAL selected.

I am sending attachment from my InfoPath form, is huge, but to be the easy identification is in Portuguese (BR) and the problem is in the repeating table.

Thank