Help please,render one object with incremental materials

Hi ! Looooong time ago, a buddy gave me that script to render objects with several material and save the still automatically with a name convention. Ideal for this kind of  routine.
I would like to use it again but it'll be more efficient if Vray frame Buffer,Vray color mapping and max gamma preference could be take into account. I mean, I would like to be able to use fully this script with Vray. My problem is ... I'm not a maxscripter ! and I don't know if there is a easy way to do it... Could you help me ? Thanks.

Here is the script : 
 

on vasy pressed do
(
    outputpath = GetSavePAth "Sauver dans : "
    for obji in objectTorender.selection do
    (
      -- print objectTorender.items[obji]
        obj = getnodebyname objectTorender.items[obji]    
        max unhide all
        select obj
        max hide inv
        for dec in $decor do
        (
        unhide dec
        )
        for mati in matTorender.selection do
        (
            obj.material = meditMaterials[mati]
            nomobj = obj.name
            matname = obj.material.name
            sortie = outputpath + "\\" + nomobj + "_" + matname + ".png"
            render  outputwidth:RenderWidth outputheight:RenderHeight outputFile:sortie vfb:myCheckBox.checked


        )
    )    


    
    messageBox "RENDER OK"
)


)