VBS自动加域问题

求大神帮忙看看，此脚本是否有问题，自动加域不成功
Const JOIN_DOMAIN = 1
Const ACCT_CREATE = 2
Const ACCT_DELETE = 4
Const WIN9X_UPGRADE = 16
Const DOMAIN_JOIN_IF_JOINED = 32
Const JOIN_UNSECURE = 64
Const MACHINE_PASSWORD_PASSED = 128
Const DEFERRED_SPN_SET = 256
Const INSTALL_INVOCATION = 262144
'strDomain = InputBox("Please type your domain name","Input")
strDomain = "zrobot.local"
'strUser = InputBox("Please type your domain user name","Input")
strUser = "zrobot\zrpcadmin"
'strPassword = InputBox("Please type you domain user's password","Input")
strPassword = "123456"
strComputer = "."
Set objShell = CreateObject("Wscript.shell")
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set objNet = CreateObject("Wscript.network")
strComputerName = objnet.ComputerName
Set objComputer = GetObject("winmgmts:{impersonationLevel=Impersonate}!\\" & _
strComputer & "\root\cimv2:Win32_ComputerSystem.Name='" & _
strComputername & "'")
ReturnValue = objComputer.JoinDomainOrWorkGroup(strDomain, _
strPassword, strDomain & "\" & strUser, NULL, _
JOIN_DOMAIN + ACCT_CREATE)