Help with scripting problem

Can some please help me out with this problem?

error:
Missing ')' in method call.
At H:\scripting\powershell\fqdmtestscom.ps1:75 char:13
+ Write-Host " <<<< LDAP Elapsed milliseconds $($ts.Milliseconds)" -ForegroundColor Red
    + CategoryInfo          : ParserError: (CloseParenToken:TokenId) [], ParseException
    + FullyQualifiedErrorId : MissingEndParenthesisInMethodCall

Script:



$domain = ‘LDAP://my.domain.com’

$agent = ‘scom.domain.com’

 

$start = [DateTime]::Now

 

$objSearcher = New-Object System.DirectoryServices.DirectorySearcher

$objSearcher.SearchRoot = $domain

$objSearcher.PageSize = 1000

$objSearcher.Filter = “(&(dNSHostName=$agent)(objectClass=computer))”

$objSearcher.SearchScope = “SubTree”

 

$colProplist = “name”,“objectSID”

foreach ($i in $colPropList)

{

    $objSearcher.PropertiesToLoad.Add($i) | Out-Null

}

 

$objSearcher.CacheResults=$false

 

$colResults = $objSearcher.FindAll()

 

$ts = New-TimeSpan -Start $start -End ([DateTime]::Now)

$prop = $colResults.Properties

Write-Host “First LDAP Elapsed milliseconds $($ts.Milliseconds)“ -ForegroundColor Yellow

 

$sid = $prop.Item(‘objectSID’)

$txtSid = ([System.BitConverter]::ToString($sid[0])).Replace(‘-’, ”)

 

 

$agentLookup = $domain + ‘/<SID=’ + $txtSid + ‘>’

$start = [DateTime]::Now

$res = [ADSI] $agentLookup

$res | gm | Out-Null

Write-Host ‘Got: ‘ $res.dNSHostName

$ts = New-TimeSpan -Start $start -End ([DateTime]::Now)

 

Write-Host “LDAP Elapsed milliseconds $($ts.Milliseconds)“ -ForegroundColor Red