Touch command in powershell

The following power shell program is the similar to the Touch Command in Unix. It has the following features.

• create new file
• modify time stamp

<#Read Me:
    Developed By:
                Name:Vaneeswaran N
                www.vaneeswaran.com
#>
$Function_Exit_Status = $false #Variable to store the exit status of the function
    function Touch_File ($filename)
    {
    $global:Function_Exit_Status = $false
    if(![System.IO.File]::Exists($filename))
    {
    echo "" > $filename 
    $global:Function_Exit_Status = $true
    }
    else
     {
     $update = get-date
        try
            {
             Set-ItemProperty -Path $filename -Name LastWriteTime -Value $update
             $global:Function_Exit_Status = $true
            }
        catch
            {
            Log_Exception $($_.Exception.GetType().FullName) $($_.Exception.Message) 
            $global:Function_Exit_Status = $false
            }
     
        }

    }