Remote Powershell popup message - powershell

Question

I'm attempting to create a remote powershell popup window to any users logged into a target computer.
I have found a simple script that does create a popup window:
(New-Object -ComObject wscript.shell).popup("THIS IS A TEST MESSAGE")
However, I cannot run this script on remote devices. We have powershell remoting restricted in our environment so I cannot use the invoke-command cmdlet in powershell.
I have bypassed this restriction in the past by using the Invoke-WmiMethod cmdlet and creating a new process remotely to achieve the desired results, like such:
Invoke-WmiMethod -Class Win32_Process -ComputerName $computer -Name Create -ArgumentList "C:\Program Files\Test\Test.exe -argument"
However, I cannot seem to find a way to generate a remote popup window using this method.
Does anybody have any great ideas on how I can accomplish my goal?

Answer 1

I figured this out. I used the msg.exe application to display my message and used powershell Invoke-WmiMethod to execute the command locally on the PC as we have remote messaging disabled:
Invoke-WmiMethod -Class Win32_Process -ComputerName HostPC -Name Create -ArgumentList "C:\Windows\System32\msg.exe * This is a test message."

Answer 2

I edited the script samples above with Powershell to make it easier to run with variables so you don't have to edit the file every time.
$server = read-host -prompt 'Input server name';
$message = read-host -prompt 'add text string';
Invoke-WmiMethod -Class win32_process -ComputerName $server -Name create -ArgumentList "c:\windows\system32\msg.exe * $message"
Thanks to Maumee River for the original answer