Powershell Connector Windows

Hi, I need connect to window machine by powershell

There is custom command for connecting to windows which gives an error  - The method or operation is not implemented

<CustomCommand Name="Connect-WindowsSession">

<![CDATA[
param(
[parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullOrEmpty()]
[String]$Target_System,

[parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullOrEmpty()]
[String]$Username,

[parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true)]
[ValidateNotNullOrEmpty()]
[String]$Password
)

$secPwd = ConvertTo-SecureString $Password -AsPlainText:$true -force
$cred = New-Object System.Management.Automation.PsCredential -ArgumentList $Username,$secPwd
#New-PSSession -Computername $Target_System -Credential $cred
Enter-PSSession -ComputerName $Target_System -Credential $cred

]]>
</CustomCommand>

I think this error related to cmdlet Enter-PSSession

Is any idea for this connection?