Add vray subdivision to multiple objects in Maya

vray_subdivision_to_multiple_objects.py

#Run script in python view on script editor
#Select all objects that need apply vray subdivision
#Execute in maya python console makeVrayAttributes(1)

import maya.cmds as cmds
import maya.mel as mel

def makeVrayAttributes(startID=1):
    sel = cmds.ls(sl=1)
    currentID=startID
    for i in sel:
        # get renderable shape nodes relative to transform, iterate through and apply subdivision
        shapes = cmds.listRelatives(i,s=1,ni=1)
        if shapes:
            for s in shapes:
                melCmd = "vray addAttributesFromGroup "+s+" vray_subdivision 1"
                mel.eval(melCmd)
                melCmd = "vray addAttributesFromGroup "+s+" vray_subquality 1"
                mel.eval(melCmd)
        # apply object ID to xform. i don't like giving individual shapes IDs.
        melCmd = "vray addAttributesFromGroup "+i+" vray_objectID 1"
        mel.eval(melCmd)
        cmds.setAttr(i+'.vrayObjectID',currentID)
        currentID += 1