I've seen this before, but it required a grip routine to parse the string text to get what you needed from the attribute supplied by the model. It would then create a note on the dwg for the 'new' name... but it's not associative unless you re-run the grip.
I did a quick search for the source code, but can't seem to find it. I'll have to check my archives at the house tonight... If I find it, I'll let you know... shouldn't be too hard to mod to your needs.
Regards,
SS
CAD should pay for itself, shouldn't it?