How to pass "EnterpriseManagementObject" Type as Function parameter?

Question

Hello, dear Colleagues.
I'm trying to  pass "EnterpriseManagementObject" as Function parameter.
Here is the piece of code:
$SCSM = 'SERVER_NAME'
function Add-Comment {
param (
[parameter(Mandatory=$true,Position=0)][Alias('Id')][String]$pSRId,
[parameter(Mandatory=$true,Position=1)][Alias('Comment')][String]$pComment,
[parameter(Mandatory=$true,Position=2)][Alias('EnteredBy')][String]$pEnteredBy,
[parameter(Mandatory=$true,Position=3)][Alias('IsAnalyst')][Bool]$AnalystComment,
[parameter(Mandatory=$true,Position=4)][Alias('IRObject')][EnterpriseManagementObject]$IRObject
if ($IRObject) {
$NewGUID = ([guid]::NewGuid()).ToString()
if ($AnalystComment)
$Projection = @{__CLASS = "System.WorkItem.Incident";
__SEED = $IRObject;
AnalystComments = @{__CLASS = "System.WorkItem.TroubleTicket.AnalystCommentLog";
__OBJECT = @{"Id" = $NewGUID;
Comment = $pComment;
DisplayName = $NewGUID;
EnteredBy = $pEnteredBy;
EnteredDate = (Get-Date).ToUniversalTime();
IsPrivate = $false
New-SCSMObjectProjection -Type System.WorkItem.IncidentPortalProjection -Projection $Projection -ComputerName $SCSM -ErrorAction stop
} else {
Write-Host $pSRId "could not be found"
$IncidentClass = Get-SCSMClass -name System.WorkItem.Incident$ -ComputerName $SCSM
$Incident = Get-SCSMObject -Class $IncidentClass -Filter "name -eq $c" -ComputerName $SCSM
Add-Comment -Id $c -Comment $text -EnteredBy $name -IsAnalyst $False -IRObject $Incident -ErrorAction stop
With GetType() I watched $Incident is "EnterpriseManagementObject":
IsPublic IsSerial Name BaseType
True True EnterpriseManagementObject Microsoft.EnterpriseManagement.Common.EnterpriseManagementObjectBaseWithProperties
But PS script returns error TypeNotFound:
Add-Comment : Unable to find type [EnterpriseManagementObject]. Make sure that the assembly that contains this type is loaded.
At C:\script.ps1:146 char:13
+ Add-Comment -Id $c -Comment $text -EnteredBy $name -IsAnalyst $True ...
+ ~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (EnterpriseManagementObject:TypeName) [], RuntimeException
+ FullyQualifiedErrorId : TypeNotFound
Is there a way to  pass "EnterpriseManagementObject" as Function parameter?
Thanks.

Answer 1

First of all the error indicates that you haven't loaded the assembly which contains the class you're trying to load.
Try loading the assembly by running:
[Reflection.Assembly]::LoadWithPartialName("Microsoft.EnterpriseManagement.Core") | Out-Null
Secondly if you want to use type based parameters restrictions you should use full type name, which can be found with the command:
$SomeObject.GetType().FullName
You should end up with: Microsoft.EnterpriseManagement.Common.EnterpriseManagementObject