Changing a creature (character) .mor

[BrendonLeCount]

It's pretty easy to open up a .utc file and change the filename that specifies a creature's appearance. I was wondering if anybody knew of a script command that accomplishes the same thing - there are commands to set race, gender, money, time before decay, etc., but I haven't found one to change the .mor file.

 

I'm trying to make Wynne's facial appearance change during the fight with the hurlock omega. There's already code to add her Vessel of the Spirit ability, so if there is a command to set the .mor filename, it would just mean one line of code.