GPO WMI Filter - Read Registry Key Value

I do have a MOF file on all clients from SMS that has the following, which I realized the URL you provided (I also found before posting this inquiry) may work.  Now just need confirmation some how:

//==================================================================
//
// SMS_DEF.mof - Maps SMS inventoriable set to that provided by
//               the WBEM CIMV2 Win32 Provider - version 1085
//
// Copyright (c) Microsoft Corporation, All Rights Reserved
//
//==================================================================

//==================================================================
// Create namespaces used by the Inventory Agent
//==================================================================


#pragma namespace ("\\\\.\\root\\cimv2")

instance of __Namespace
{
      Name = "SMS" ;
};

#pragma namespace ("\\\\.\\root\\cimv2\\SMS")

class SMS_Class_Template
{
};

instance of __Namespace
{
      Name = "DELTA" ;
};

#pragma namespace ("\\\\.\\root\\cimv2\\SMS\\DELTA")

class SMS_Delta
{
    [SMS_Report (True), key]
        string     InstancePath ;
        string     InstanceText ;
        string     TimeStamp ;
};

[DYNPROPS]
instance of Chrysler_MachineData
{
      Name = "Chrysler MachineData";
      [PropertyContext("local|HKEY_LOCAL_MACHINE\\SOFTWARE\\Chrysler\\MachineData|ReleaseVersion"), Dynamic, Provider("RegPropProv")] ReleaseVersion;
};