I have downloaded some amazing engines from the download station, there are obviously some dedicated trainz fans out there.  One thing I have noticed is that some engines actually change their nameplates when you change the running number, while others don't.  This seems like magic to me but I was wondering if it is possible for me to somehow edit those that don't change their name to behave like those that do.   Does anyone have the technical know-how to tell me if this is possible and if so, how?