export csv with personal column

hi,

i tried to export data of rdm in a xml file.

But i want to select only a few columns (domain, architecture, os and description).

My script is:



$s = Get-RDMSession | where {$_.ConnectionType -eq "RDPConfigured"} |
foreach { New-Object PSObject -Property @{
Name = $_.Session.ToString()
Domain = ($_.Session.GetProperty("MetaInformation", "Domain"))
Architecture = ($_.Session.GetProperty("MetaInformation", "Architecture"))
OS = ($_.Session.GetProperty("MetaInformation", "OS"))
Description = ($_.Session.GetProperty("", "Description"))
}};
## save to csv, the field names are used as column headers.
$s | export-csv c:\temp\sessions.csv -notypeinformation;



but i have a lot of errors like:


You cannot call a method on a null-valued expression.
At C:\Travail\RDM\script_ps\export-csv.ps1:2 char:14
+ foreach { New-Object PSObject -Property @{
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull




my version of rdm is 12.0.10.0

best regards

Vincent