powershell - Property is empty when run through Invoke-Command -

i trying individually monitor memory usage of process (w3wp.exe) has multiple instances of filtering out string found in process' commandline property.

it works when run script locally:

$proc = (wmiobject win32_process -filter "name = 'w3wp.exe'" | where-object {$_.commandline -like "*sometextfromcl*"}) $id = $proc.processid  $ws = [math]::round((get-process -id $id).ws/1mb) write-host $ws 

however, when try run remotely through invoke-command, error telling id property's value null:

cannot bind argument parameter 'id' because null. + categoryinfo          : invaliddata: (:) [get-process], parameterbindingvalidationexception + fullyqualifiederrorid : parameterargumentvalidationerrornullnotallowed,microsoft.powershell.commands.getprocesscommand + pscomputername        : remoteservername 

my invoke-command syntax is:

invoke-command -computername remoteservername -filepath script.ps1 -credential $mycredential 

i'm sure it's simple i'm ps after long absence , had around couldn't find helpful.

you writing answer console. use ps1 function, should use:

return $ws 

instead of

write-host $ws