How to add multiple values in peoplepicker field useing powershell

Question

Hi, I have some issues trying to make a script that takes multiple users from AD group and adds them to a sharepoint 2019 lists Person and group collon, at the end I only get one entry in the sharepoint list (the first user that the AD group has) my script:

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

Configuration Variables

$FieldName="Fieldname"

Get site and List objects

$web = Get-SPWeb https://sitename
$list= $web.GetList("https://sitename/list")

Get the List Item to update

$ListItem = $List.GetItemByID(644)

User Account to set

$UserAccounts=Get-ADGroupMember -Identity "ADgroupname"

$UserCollection = new-object Microsoft.SharePoint.SPFieldUserValueCollection
foreach($UserAccount in $UserAccounts)
{
#Get the User
$User=$web.EnsureUser($UserAccount.SamAccountName)

#Add to collection
$UserFieldValue = new-object Microsoft.SharePoint.SPFieldUserValue($Web, $User.ID, $User.LoginName)
$UserCollection.Add($UserFieldValue)

}

update the Multiple value Person or Group field

$ListItem[$FieldName] = $UserCollection
$ListItem.Update()

Any help would be appreciated

Answer 1

Hi @IT SUPPORT ,

You need to configure the variable $UserCollection as the below:

[Microsoft.SharePoint.SPFieldUserValueCollection]$UserCollection = new-object Microsoft.SharePoint.SPFieldUserValueCollection  

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