Add functions to the script SimonScripts-VrayColorCorrect_V1

Hi, I try to add functions to this script (https://www.scriptspot.com/3ds-max/scripts/vraymtl-color-correction), but it doesn't work, help pls
....
local createColorCorrection = on
local matDiffArr = #()
local matTransArr = #()
local matBumpArr = #()
local matglossArr = #()
local matIllumArr = #()
local matOpacArr = #()
local trans = TranslcencyCheckbox.checked
local diff = DiffuseCheckbox.checked
local bump = BumpCheckbox.checked
local gloss = GlossinessCheckbox.checked
local selfillum = SelfIllumChekbox.checked
fn getmatArr curArr RenderMat texmap_Slot Slot_Color =
(
local createColorCorrection
for o in selection where o.material != undefined do
join curArr (getClassInstances RenderMat target:o.material)

makeUniqueArray curArr

for mat in curArr do
(
if mat.texmap_Slot != undefined and isKindOf mat.texmap_Slot Color_Correction do
(
createColorCorrection = off
exit
)
)---check for already existing ColorCorrect if it finds one it avoid add a new one

if createColorCorrection do
(
for mat in curArr do
(
local cc = Color_Correction ()
cc.color = mat.Slot_Color
newMat = copy mat
newMat.name = mat.name
newMat.texmap_Slot = copy cc

if newMat.texmap_Slot != undefined do
(
newMat.texmap_Slot.map = mat.texmap_Slot
newMat.texmap_Slot.saturation = Saturationval.value
newMat.texmap_Slot.hueShift = hueShiftval.value
newMat.texmap_Slot.gammaRGB = gammaRGBval.value
newMat.texmap_Slot.pivotRGB = pivotRGBval.value
newMat.texmap_Slot.liftRGB = liftRGBval.value
newMat.texmap_Slot.brightness = brightval.value
newMat.texmap_Slot.contrast = contrastval.value
(
if Invertrb.state == 1 then
(
newMat.texmap_Slot.rewireMode = 0
)
else
(
newMat.texmap_Slot.rewireMode = 2
)
)
(
if lightnessrb.state == 1 then
(
newMat.texmap_Slot.lightnessMode = 0
)
else
(
newMat.texmap_Slot.lightnessMode = 1
)
)
)

replaceInstances mat newMat
)
)

)

---------------------------------------------------Diffuse----------------------------—
if diff do
try ( with redraw off
getmatArr matDiffArr VrayMtl texmap_diffuse diffuse
redrawViews()
) catch()
createColorCorrection = on
....

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