Provisioning BITLocker with Windows to Go via SCCM2012

Hello,

I am following this document http://technet.microsoft.com/en-us/library/jj651035.aspx to provision Windows to go via Pre-Staging.

The instructions on what to put in the pre-start command is a little wooly, as best I can make out, I am pasting this directly in in prestart command window:

dim osd: set env = CreateObject(“Microsoft.SMS.TSEnvironment”)
dim logPath
logPath = env(“_SMSTSLogPath”)

env(“OSDBitLockerPIN”) = "password"

However, the task sequence falls flat when running the Bitlocker to go package, looking at the logs I see:

Failed to find Passphrase

I am running the package after the 'Configure Windows and SCCM Agent' step; OC the machine re-boots into windows here so I am not convinced it is the right place to call the package.

Can someone who has done this before give me sa quick hand please :)

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:-)