Extracting T and X, Y, Z coordinates at a particular surface of a thermal analysis

Dear forum,

I'm trying to do a thermal analysis named resther with Code_Aster where I need to extract the temperatures and the X, Y, Z coordinates of the nodes at a particular surface on the mesh called 'surf_1' to a text file.

So far I only succeded to extract the temperatures using following section in the comm file:

IMPR_RESU(
  FORMAT='RESULTAT',
  MODELE=model,
  RESU=_F(
    GROUP_MA=('surf_1', ),
    NOM_CHAM=('TEMP', ),
    RESULTAT=resther), UNITE=8)

But when I try to include X, Y, Z by using the following code containing NOM_CMP (and IMPR_COOR) the resultant file does not contain any information:

IMPR_RESU(
  FORMAT='RESULTAT',
  MODELE=model,
  RESU=_F(
    GROUP_MA=('surf_1', ),
    IMPR_COOR='OUI',
    NOM_CHAM=('TEMP', ),
    NOM_CMP=('X', 'Y', 'Z'),
    RESULTAT=resther), UNITE=8)

Instead warning messages appear reading as follows:
    ...La composante X n'existe dans aucun des champs du resultat...
    ...La composante Y n'existe dans aucun des champs du resultat...
    ...La composante Z n'existe dans aucun des champs du resultat...

What am I doing wrong?

Regards

Please not that this issue has been resolved on another forum which belongs to Code-Aster:

https://code-aster.org/forum2/viewtopic.php?id=26100

Best regards,

Ennio