How do you register an iSCSI Target with an iSNS server (Windows 2012 R2)

I can't find any doumentation for setting up iSNS registration for a iSCSI target in Windows 2012 R2.

I did find some documentation that is for 2012 non R2:

http://blogs.technet.com/b/filecab/archive/2012/06/08/iscsi-target-cmdlet-reference.aspx

It said to do the following in powershell:

Set-WmiInstance -Namespace root\wmi -Class WT_iSNSServer –Arguments @{ServerName="ISNSservername"}

Doing that I get the following response:

format-default : The following exception occurred while retrieving members: ""
    + CategoryInfo          : NotSpecified: (:) [format-default], ExtendedTypeSystemException
    + FullyQualifiedErrorId : CatchFromBaseGetMembers,Microsoft.PowerShell.Commands.FormatDefaultCommand

I have gotten all of my iSCSI initiators registering with the iSNS server, but without the target registering, there isn't really a point to it.

Thank you

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Scott Hellewell