Delete sharepoint user property using powershell

Question

This is the script im using to delete the sharepoint userprofile property using powershell.

#Load Sharepoint SnapIn
if ((Get-PSSnapin "Microsoft.SharePoint.PowerShell" -ErrorAction SilentlyContinue) -eq $null)
{
    Add-PSSnapin Microsoft.SharePoint.PowerShell
} 



# Variables
$path = "path of the xml file"  
# Reading XML File 
write-host -f yellow "Reading XML File Path=" $path
[xml]$xmldata= Get-Content $path
$connectionName = $xmldata.UserProfileProperties.ADName

# start Script

$site = Get-SPSite $xmldata.UserProfileProperties.SPSite
$serviceContext = Get-SPServiceContext $site 
$userProfileConfigManager = New-Object Microsoft.Office.Server.UserProfiles.UserProfileConfigManager($serviceContext)
$connectionManager = $userProfileConfigManager.ConnectionManager 
$connection = $connectionManager[$connectionName]
$propertyMapCollection = $connection.PropertyMapping
$profilePropertyManager = $userProfileConfigManager.ProfilePropertyManager
$corePropertyManager = $profilePropertyManager.GetCoreProperties()
$secMan = $userProfileConfigManager.GetPropertiesWithSection()
$profileTypePropertyManager = $profilePropertyManager.GetProfileTypeProperties([Microsoft.Office.Server.UserProfiles.ProfileType]::User)
$profileSubTypeManager = [Microsoft.Office.Server.UserProfiles.ProfileSubTypeManager]::Get($serviceContext)
$defaultSubType = [Microsoft.Office.Server.UserProfiles.ProfileSubtypeManager]::GetDefaultProfileName([Microsoft.Office.Server.UserProfiles.ProfileType]::User)
$profileSubType = $profileSubTypeManager.GetProfileSubtype($defaultSubType)
$profileSubTypePropertyManager = $profileSubType.Properties


#Remove the manager user property Active Directory mapping
    if($connection -ne $null)
    {
        $pm = $connection.PropertyMapping["manager"];
        if($pm -ne $null)
        {
            $pm.Delete();
            Write-Host -f Yellow "AD Property manager is deleted"
        }
        else
        {
            Write-Host -f Yellow "AD Property manager is not mapped to any user property"
        }
    }
    else
    {
        Write-Host -f Yellow $connectionName " does not exists"
    }

But when I run this code its giving the following error.

Cannot index into a null array. At C:\Users\hearttest\Desktop\Roy - Scripts\sharepointuserpropertysetupshellscript\SharepointUserPropertySetupScript.ps1:51 char:13 + $pm = $connection.PropertyMapping["manager"]; + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : NullArray

Im really new to this powershell scripts please help me out on this asap.

Thank You.

Answer 1

pls refer below link...

http://www.c-sharpcorner.com/uploadfile/anavijai/delete-user-property-in-sharepoint-2010-using-powershell/

Hope it helps...