Exchange 2016 Count script - XML Parser mismatch: - (code: PE231)

Hi,

Im trying to run a script in PRTG that display how many mailboxes have Mailbox Auditing Enabled.

$Truecount = Get-Mailbox -filter {(servername -eq "<ommitted>" -or servername -eq "<ommitted>" -or servername -eq "<ommitted>") -and (AuditEnabled -eq $True)} | measure | % { $_.Count }

Write-Host @"
<prtg>
  <result>
    <channel>First channel</channel>
    <value>$Truecount</value>
    </result>
</prtg>
"@

The script runs perfectly on Both the EXCHANGE server and on the PRTG Probe

Here are the results

<prtg>
  <result>
    <channel>First channel</channel>
    <value>2</value>
    </result>
</prtg>

But when i put the Sensor in PRTG i get the following error.

XML: XML Parser mismatch: Wanted </<<<>, got </prtg> -- JSON: The returned JSON does not match the expected structure (Invalid JSON.). (code: PE231)

I know its not the prettiest script (im a newbie), but surely the XML output is correct.

THanks

exchange prtg xmlexesensor