I am working on an Issue tracking list inside SharePoint team site and i need to modify the "Editor" & "Modified" fields for an existing item's version comment:-

enter image description here

so i wrote the following power-shell script, to get the first comment of an item and update its fields (Editor & Modified fields):-

#set the web url and the list name to work upon
$url = "http://***/Customer Sites/customerA/"
$listName = "Action"
$fileName = "12312312"
#Get the appropriate list from the web
$web = get-SPWeb $url
$list = $web.lists[$listName]
#Get the file using the filename
$item = $list.Items | ? {$_.Title -eq $fileName}
$versions = $item.versions 
$version = $versions[0];

#Set the created by values
$userLogin = "a***\m***"
$dateToStore = Get-Date "10/03/2015 10:15:20"
$dateToStore2 = Get-Date "12/03/2015 23:15:20"
$user = Get-SPUser -Web $web | ? {$_.userlogin -eq $userLogin}
$userString = "{0};#{1}" -f $user.ID, $user.UserLogin.Tostring()
#Sets the created by field

#Set the modified by values
$version["Editor"] = $userString
$version["Modified"] = $dateToStore2
#Store changes without overwriting the existing Modified details.

but i got the following exception on $version["Editor"] = $userString & $version["Modified"] = $dateToStore2 statments:-

Unable to index into an object of type Microsoft.SharePoint.SPListItemVersion.

here is a screenshot of my power-shell window with the exception that i got:-

enter image description here

so can anyone advice how i can edit these 2 fields for an item comment ?


You can get the field value of a field in a particular item version using $version.item["Field Display name"] but I think it is a read only property and you cant set it via code.


  • Yes seems i can not update them as they are read-only, so is there a way to create new version for an item using powershell and pass these info to it ; created date, create by + comment text ? i need this as i am merging multiple lists inside one list, and to do so i need to preserve the original item versions info, so i want to create these versions on the new list to match the old list info ? – john Gu Nov 27 '15 at 12:30

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