Connecting or disconnecting on a windows-based vpn (rasdial) with notification messages

Set-VpnStatus.ps1

param(
    $vpnName,
    [ValidateSet("Connect", "Disconnect")]
    [string]
    $action
)

switch ($action) {
    "Disconnect" {
        $vpn = Get-VpnConnection -Name $vpnName
        if ($vpn.ConnectionStatus -eq 'Connected') {
            rasdial $vpnName /disconnect
            (New-Object -ComObject Wscript.Shell).Popup('Disconnected from VPN ' + $vpnName + '.', 2, 'Disconnected VPN', 0x0) 
        } else {
            (New-Object -ComObject Wscript.Shell).Popup('Allready Disconnected from VPN ' + $vpnName + '.', 2, 'Disconnected VPN', 0x0) 
        }
    }
    Default {
        $vpn = Get-VpnConnection -Name $vpnName
        if ($vpn.ConnectionStatus -eq 'Disconnected') {
            rasdial $vpnName
            (New-Object -ComObject Wscript.Shell).Popup('Connected to VPN ' + $vpnName + '.', 2, 'Connected VPN', 0x0)
        } else { 
            (New-Object -ComObject Wscript.Shell).Popup('Allready Connected to VPN ' + $vpnName + '.', 2, 'Connected VPN', 0x0) 
        }
    }
}

# pwshw -command "~\Set-VpnStatus.ps1 -vpnName 'abc' -action 'Connect'"
# pwshw -command "~\Set-VpnStatus.ps1 -vpnName 'abc' -action 'Disconnect'"