param(
    [string]$user = "yourUser",
    [string]$password = "yourPassword",
    [string]$serverAndPort = 'http://yourVEM.fqdn:9399',
    [string]$timeout = "10"
)

# POST - Authorization
$Auth = @{uri = "$($serverAndPort)/api/sessionMngr/?v=v1_2";
                   Method = 'POST'; #(or POST, or whatever)
                   Headers = @{Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes("$($user):$($password)"));
           } #end headers hash table
   } #end $params hash table

try {
$AuthXML = Invoke-WebRequest @Auth -TimeoutSec $timeout -UseBasicParsing
}catch{
    Write-Output "<prtg>"
    Write-Output "<error>1</error>"
    Write-Output "<text>Authentication Failed: $($_.Exception.Message)</text>"
    Write-Output "</prtg>"
    Exit
}

# GET - Session Statistics
$Sessions = @{uri = "$($serverAndPort)/api/reports/summary/job_statistics";
                   Method = 'GET';
                   Headers = @{'X-RestSvcSessionId' = $AuthXML.Headers['X-RestSvcSessionId'];
           } #end headers hash table
    }

try {
[xml]$SessionsXML = invoke-restmethod @Sessions
}catch{
    Write-Output "<prtg>"
    Write-Output "<error>1</error>"
    Write-Output "<text>Session Query Failed: $($_.Exception.Message)</text>"
    Write-Output "</prtg>"
    Exit
}

$SuccessfulJobRuns = $SessionsXML.JobStatisticsReportFrame.SuccessfulJobRuns
$WarningsJobRuns = $SessionsXML.JobStatisticsReportFrame.WarningsJobRuns
$FailedJobRuns = $SessionsXML.JobStatisticsReportFrame.FailedJobRuns

# GET - VM Statistics
$VMs = @{uri = "$($serverAndPort)/api/reports/summary/vms_overview";
                   Method = 'GET';
                   Headers = @{'X-RestSvcSessionId' = $AuthXML.Headers['X-RestSvcSessionId'];
           } #end headers hash table
    }

try {
[xml]$VMsXML = invoke-restmethod @VMs
}catch{
    Write-Output "<prtg>"
    Write-Output "<error>1</error>"
    Write-Output "<text>VMs Query Failed: $($_.Exception.Message)</text>"
    Write-Output "</prtg>"
    Exit
}

$ProtectedVms = $VMsXML.VmsOverviewReportFrame.ProtectedVms
$SourceVmsSize = [Math]::round((($VMsXML.VmsOverviewReportFrame.SourceVmsSize) / 1073741824),0)

# XML Output for PRTG
Write-Host "<prtg>"
Write-Host "<result>"
               "<channel>SuccessfulJobRuns</channel>"
               "<value>$SuccessfulJobRuns</value>"
               "<showChart>1</showChart>"
               "<showTable>1</showTable>"
               "</result>"
Write-Host "<result>"
               "<channel>ProtectedVms</channel>"
               "<value>$ProtectedVms</value>"
               "<showChart>1</showChart>"
               "<showTable>1</showTable>"
               "</result>"
Write-Host "<result>"
               "<channel>SourceVmsSize</channel>"
               "<value>$SourceVmsSize</value>"
               "<unit>Custom</unit>"
               "<customUnit>GB</customUnit>"
               "<showChart>1</showChart>"
               "<showTable>1</showTable>"
               "</result>"
Write-Host "<result>"
               "<channel>WarningsJobRuns</channel>"
               "<value>$WarningsJobRuns</value>"
               "<showChart>1</showChart>"
               "<showTable>1</showTable>"
               "<LimitMaxWarning>1</LimitMaxWarning>"
               "<LimitMode>1</LimitMode>"
               "</result>"
Write-Host "<result>"
               "<channel>FailedJobRuns</channel>"
               "<value>$FailedJobRuns</value>"
               "<showChart>1</showChart>"
               "<showTable>1</showTable>"
               "<LimitMaxError>1</LimitMaxError>"
               "<LimitMode>1</LimitMode>"
               "</result>"
Write-Host "</prtg>"