PowerShell FIM Clear Runs

# Get the MIIS_SERVER class
$lstSrv = @(get-wmiobject -class "MIIS_SERVER" -namespace "root\MicrosoftIdentityIntegrationServer" -computer ".")
# Clear runs older than 3 days
$date = (get-date).addDays(-3)
# Create string in correct format (yyyy-MM-ddTH:m:s.000)
$datestr = $date.year.ToString()+"-"+$date.month.ToString().PadLeft(2,"0")+"-"+$date.day.ToString().PadLeft(2,"0")+"T"+$date.hour.ToString().PadLeft(2,"0")+":00:00.000"
# Run the query
$lstSrv[0].ClearRuns($datestr)