How to read blob data from vendorparametersets?

Hi,

I am working on some scripting with TMG and have run into some issues modifying the configuration via the COM interface.

For example - if you have a web publishing rule set up with customised selections under Traffic > Filtering > Configure HTTP, this will create an entry under the rule's vendor parameter sets. To view it you can use this script in an elevated Powershell:

$fpcroot = New-Object -ComObject fpc.root
$tmgarray = $fpcroot.GetContainingArray()
$global:PolicyRules = $tmgarray.ArrayPolicy.PolicyRules
$rule = $PolicyRules.Item("YOUR-RULE-NAME")
$rule.VendorParametersSets

You can see the entry in question is {f1076e51-bbaf-48ba-a2d7-b0875211e80d}. If you select that entry (eg.

$rule.VendorParametersSets.Item('{f1076e51-bbaf-48ba-a2d7-b0875211e80d}')

Name                                                        AllNames
----                                                        --------
{f1076e51-bbaf-48ba-a2d7-b0875211e80d}                      {XML_POLICY}

), you still can't view the actual data under the {XML_POLICY} value.

Is it possible to retrieve the data in PowerShell? I can write to it easily, so it should be readable...

Thanks