Which user is logged in to a windows vm

I am looking for a script i can run in powergui which can provide me the user who is logged in to a set or all of our vm?

I did found this out there:

$vms =get-vm *vm-name*

ForEach ($vmin$vms)

{ $QueryString=GwmiWin32_ComputerSystem-Comp$vm

$QueryString =$QueryString.userName

if ($QueryString-eq$null) {$vm | Set-CustomField-Name“Logged in User”-Value"No One Logged In"} ELSE {$vm | Set-CustomField-Name“Logged in User”-Value$QueryString}}

Part of the results though come back like this;

CustomFields : {[Logged in User, No One Logged In], [Transfer Server Status, ]

, [VM Lock Status, ]}

Thanks,