Count running process

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PowerShell

Hi Guys:

I'm trying to count the Stellar process from a remote server, my code snippets is given below:

function GetProcessCount($serverName)
{
    $serviceArray = Get-WmiObject -class Win32_Service -computerName $serverName ;
    $Counter = 0
    $serviceArray | foreach {
        $serviceinfo = "" | select name, state, status
        $Counter ++;
    }
    write-host "Process count";
    write-host $Counter;
    return $Counter
}

The above is ok for local, but when I try to a remote machine I get the following error:

Get-WmiObject : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
At C:\Script\LoginScript_v1.ps1:186 char:31
+ $serviceArray = Get-WmiObject <<<< -class Win32_Service -computerName $serverName ;
+ CategoryInfo : NotSpecified: (:) [Get-WmiObject], UnauthorizedAccessException
+ FullyQualifiedErrorId : System.UnauthorizedAccessException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

How can I count the process from remote machine.