Hi,
what do you mean by "adjust"? You can add a map to a slot in the material editor (up to 100), but you cannot change the parameters there. Maybe this helps:
-- get a reference to the map, assuming to find it in diffuse of the selected object and using a CoronaPhysicalMtl:
Multimap=$selection[1].Material.baseTexmap
-- show all properties:
show Multimap
-- Choose a slot:
indexToChange=14
-- list parameters of the slot:
format "Frequency: %\n" Multimap.frequency[indexToChange] as string
format "Texmap: %\n" (if Multimap.texmaps[indexToChange]==undefined then "-none-" else Multimap.texmaps[indexToChange].name)
format "Texmap on: %\n" Multimap.texmapsOn[indexToChange]
format "Color: %\n" Multimap.colors[indexToChange]
format "Texmap on: %\n" Multimap.texmapsOn[indexToChange]
--set frequency and color:
Multimap.frequency[indexToChange]=0.2
Multimap.colors[indexToChange]=color 128 64 64
Good Luck