MAXScript to load LoD's for use in Unreal Engine

lod_load.ms

pluginManager.loadClass FbxImporter
findDir = getDir #import + @"\"
rootDir = getSavePath initialDir:findDir
tileDirs = GetDirectories (rootDir+"\\Tile*")

for theDir in tileDirs do
(	
	print theDir
	--theDirStrg = theDir + "\\*.fbx"
	--theFiles = getFiles theDirStrg
	theDirStrg15= theDir + "\\*L17.fbx"
	theFiles = getFiles theDirStrg15
	theDirStrg17 = theDir + "\\*L18.fbx"
	join theFiles  (getFiles theDirStrg17)
	theDirStrg19 = theDir + "\\*L19.fbx"
	join theFiles  (getFiles theDirStrg19)
	theDirStrg21 = theDir + "\\*L20.fbx"
	join theFiles (getFiles theDirStrg21)

	theObjects = #()
	exportlist = #()

	for i in theFiles do
	(


	thePathStrg = i
	theName = getFilenameFile thePathStrg
	importfile (i) #noprompt
	--add FBX switches here example: FbxImporterSetParam "Lights" false
	FBXImporterSetParam "Mode" #create
	append theObjects theName
	$selection[1].name = theName

	--LayerManager.newLayerFromName theName
	--newFBXlayer = layermanager.getLayerFromName theName

	--for c = 1 to theObjects.count do
	--(
	--newFBXlayer.addnode theNodes[c]
	--theNodes[c].isHidden = false
	--)
	)

	exportlist = for b in theObjects where isValidNode (obj = getNodeByName b) collect obj
	--Select all meshes from above.
	select exportlist

	--group now.
	thegroup = group exportlist name: ("Lod_Group")
	select thegroup

	--Now Level Of Detail, and add set.
	max utility mode
	UtilityPanel.OpenUtility Level_of_Detail
	panel = (windows.getChildHWND #max "Utilities")
	CreateNewSetButton = (windows.getChildHWND (UIAccessor.GetParentWindow panel[3]) "Create New Set")
	UIAccessor.PressButton CreateNewSetButton[1]

	--Also select the UCX_ object, for collision, if it exists.
	obj = getnodebyname ("UCX_" + exportlist[1].name)
	if obj != undefined then selectMore obj

	--Export only selected to FBX.
	dirname = (filterString (filenameFromPath theDir) "\\") [1]
	FBXSavePath = (rootDir+"\\"+dirname+"_Lod.fbx")
	print FBXSavePath
	FbxExporterSetParam "Animation" True
	FbxExporterSetParam "EmbedTextures" True
	FbxExporterSetParam "SmoothingGroups" True
	exportFile FBXSavePath #noPrompt selectedOnly:true using:FBXEXP 
)