TDF_Label aLabel = mySize->Label().FindChild(theIndex + 1);
// create a new attribute each time, by demand
// supporting of old attributes is too slow (synch each time) and buggy on redo
TDF_Label aLabel = mySize->Label().FindChild(theIndex + 1);
// create a new attribute each time, by demand
// supporting of old attributes is too slow (synch each time) and buggy on redo