When I try to update the display name of the item am getting the following error. Please let me know how to fix this?

```
            Working
     Please wait, working... unlike you!
       'DisplayName' is a ReadOnly property.
      At C:\inetpub\wwwroot\qablog1\temp\tmp7D8B.ps1:13 char:7
+       $row.DisplayName="fff"
+       ~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : PropertyAssignmentException

```

Script:

```
$AllDining = Get-ChildItem -Path "master://sitecore/content/root/Dining" -Recurse

foreach ( $row in $AllDining ) {
    $row.Editing.BeginEdit();
    $row.DisplayName="fff"
    $row.Editing.EndEdit();
    Write-host "title: " $row["DisplayName"];
}
Write-Log $logInfo

```