Yes , it is changeentityproperty(character to be changed, "model", character to change to, 0/1);
0 means keep the same animation. So , imagine that dummy is playing their follow 20 , new model will appear using their follow 20.
1 means new model will use their default animation. I assume that might be the first animation declared in their text but I've never used it.
It is documented. In utunnel's
script reference F.A.Q/guide .