问无法使用Powershell获取Biztalk主机实例状态

EN

    $servers = ("usxxxxxxx01")

 function checkhostinstancestatusstarted ($server)
 {

$hostinstances = get-wmiobject MSBTS_HostInstance -namespace 'root\MicrosoftBizTalkServer'  | where {$_.runningserver -match $server -AND $_.hosttype -ne "2" -and $_.IsDisabled -ne    "True"}

write-host "Checking the state of all host instances on the server $server"

foreach ($hostinstance in $hostinstances)
    {
    $HostInstanceName = $HostInstance.hostname

    #Checks the host instance state
    if ($HostInstance.ServiceState -eq 1)
        {
        write-host "$HostInstanceName`: Stopped."
        }
    elseif ($HostInstance.ServiceState -eq 2)
        {
        write-host "$HostInstanceName`: Start pending."
        }
    elseif ($HostInstance.ServiceState -eq 3)
        {
        write-host "$HostInstanceName`: Stop pending."
        }
    elseif ($HostInstance.ServiceState -eq 4)
        {
        write-host "$HostInstanceName`: Started."
        }
    elseif ($HostInstance.ServiceState -eq 5)
        {
        write-host "$HostInstanceName`: Continue pending."
        }
    elseif ($HostInstance.ServiceState -eq 6)
        {
        write-host "$HostInstanceName`: Pause pending."
        }
    elseif ($HostInstance.ServiceState -eq 7)
        {
        write-host "$HostInstanceName`: Paused."
        }
    elseif ($HostInstance.ServiceState -eq 8)
        {
        write-host "$HostInstanceName`: Unknown."
        }
    }
write-host `n    
}

foreach ($server in $servers)
{
checkhostinstancestatusstarted $server 
}