Not able to access Outlook COM Object's properties in Background jobs

Hi,

I have a main script in which I have a custom collection where I will be storing config information andOutlook COM Object.

I'm passing the custom collection's object as a parameter to the background jobs.

I'm getting the exception "Property .. cannot be found on this object; make sure it exists and is settable" when I try to access the Outlook COM Object's properties present in the custom collection.

I can access the properties and methods of the Outlook object in the main script but not in the background jobs.

Below is the code.

$PFServerList = @() 
$csv = Import-Csv 'C:\Config.csv'

foreach ($line in $csv) 
{
$TempObj = New-Object System.Object
$TempObj | Add-Member -type NoteProperty -name PFRoot -value $line.PFRoot
$TempObj | Add-Member -type NoteProperty -name PFPath -value $line.PFPath
$TempObj | Add-Member -type NoteProperty -name PFfolder -value null    # Outlook COM Object will be stored
$TempObj | Add-Member -type NoteProperty -name PostSubject -value $null
$PFServerList += $TempObj
}

Add-type -assembly "Microsoft.Office.Interop.Outlook" | out-null
$olFolders = "Microsoft.Office.Interop.Outlook.olDefaultFolders" -as [type]
$outlook = new-object -comobject outlook.application

for($i = 0;$i -lt $PFServerList.Count; $i++)
{
$namespace = $outlook.GetNameSpace("MAPI")
$session = $namespace.session
$Pfs = $namespace.folders | where {$_.name -like "Public FOlders*"}
$APF = $pfs.folders | where {$_.name -eq "All Public Folders"}
$Pflist = $PFServerList[$i].PFPath.split("\")
$PFlist = $pflist | ?{$_} 
$PFfolder = $APF.folders.Item($PFServerList[$i].PFRoot)
foreach($pf in $Pflist)
{
$PFfolder = $PFfolder.folders.item($pf)
}
$PFServerList[$i].PFfolder = $PFfolder
}


$PostMessage=
{
param($PFServer)

try
{
$post_item = $PFServer.PFfolder.items.add(6)
$post_subject = "Test Client MAPI"
$post_item.Subject = $post_subject # I get exception here when I try to access $post_item.Subject
# Remaining code
}

catch
{

}
}


for($i = 0;$i -lt $PFServerList.Count; $i++)
{
Start-Job -ScriptBlock $PostMessage -ArgumentList $PFServerList[$i]
}

Where have I gone wrong?

Thanks,

Ashrith