Parent3DObject property of an operator doesn't seem to be working.

["Steven Caron" <carons(at)gmail.com>]

i can't seem to use "operator.Parent3DObject". it seems to be returning "None" for me.. any ideas as to why?

thanks in advance
steven

#code
#imports
import win32com.client
from win32com.client import constants
    
#globals
xsi    = win32com.client.Dispatch( "XSI.Application" ).Application
xsiColl = win32com.client.Dispatch( "XSI.Collection" )
xsiPrint = xsi.LogMessage

meshSelect = xsi.Selection
validMeshes = xsiColl
for mesh in meshSelect:
    if mesh.Type == "polymsh":
        validMeshes.add(mesh)

if validMeshes.Count > 1:
    genOp = xsi.ApplyGenOp
("MeshMerge", "", validMeshes.GetAsText(), 3, "siPersistentOperation", "siKeepGenOpInputs")(0) #gets the single operator from the collection returned
    xsiPrint(genOp.Parent3DObject
) #returns "None" for me???
else:
    xsiPrint("not enough valid meshes")