Save texturemaps to mat file

Hi there,

I'm trying to write a script to add an array of texturemaps to a specified mat file and failing miserably. For example:

a = loadTempMaterialLibrary "f:\bleh.mat"

for i in (getclassinstances Cellular) do
(
append i a
)

saveTempMaterialLibrary a "f:\bleh.mat"

Gives me 'No ""append"" function for Map #1:Cellular'. I guess the append function doesn't apply to texturemaps as they are a subclass of materials, not materials themselves.

Help!