data()->addAttribute(BASE_REF_ID(), ModelAPI_AttributeReference::typeId());
data()->addAttribute(DEFLECTION_ID(), ModelAPI_AttributeDouble::typeId());
data()->addAttribute(TRANSPARENCY_ID(), ModelAPI_AttributeDouble::typeId());
+ data()->addAttribute(ISO_LINES_ID(), ModelAPI_AttributeIntArray::typeId());
if (aDocRef->isInitialized() && // initialized immediately means already exist and will be loaded
!Model_Application::getApplication()->hasDocument(aDocRef->docId()))