Hello @Manel_Fernandez
to get the values of parameters, you need this class
here is a small example, (values vary according to each type)
out = []
if doc.IsFamilyDocument:
famManager = doc.FamilyManager
for familyType in famManager.Types:
paraTypeDescription = famManager.get_Parameter(BuiltInParameter.ALL_MODEL_DESCRIPTION)
typeDescriptionValue = familyType.AsString(paraTypeDescription)
out.append([familyType.Name, paraTypeDescription.Definition.Name, typeDescriptionValue])
OUT = out