--This sets the current renderer to 
--the latest version of Vray if you 
--have it installed

renderers.current = Vray()

-- Store the current render in a variable
MyVray = renderers.current

-- Now you can inspect what properties 
-- you can reach from maxscipt
-- Just press shift + enter to run this line
ShowProperties MyVray

-- and look in the listener to see what 
-- properties are available

--Quite a few ;-)

AllBitmapsInMyScene = GetClassInstances bitmapTex
for bm in AllBitmapsInMyScene do
(
print bm.filename	
)

--This updates all paths to a new root folder
--IMPORTANT it ONLY updates bitmaps... NOT
--VrayHdri or other map. If you want to support more maps
--You have to get all instances of that class

NewRootFolder = "c:\\temp"
--you can use this command to show 
--a dialog to select a folder
--NewRootFolder = getSavePath() 

AllBitmapsInMyScene = GetClassInstances bitmapTex

for bm in AllBitmapsInMyScene do
(
  TheFilename = getFileNameFile bm.filename
  TheFileType = getFileNameType bm.filename

  bm.filename = (NewRootFolder + "\\" + TheFilename + TheFileType)
)

--this prints all the names of the materials..
for m in sceneMaterials do (
  print m.name
)

--this changes the names
for m in sceneMaterials do (
   m.name = ("Test" + m.name )
)

--This is the name of the material
FindThisMat = "03 - Default"

--This tries to find the instance of the Material with the name "03 - Default"
--Remember the for where collect always returns an array
mat = for m in sceneMaterials where m.name == FindThisMat collect m

--This selects all objects in the scene with that material applied to it
--check all objects if they have the same material as the first Material in 
--our array created above
TheMats = for item in objects where item.material == mat[1] collect item
	
Select TheMats