Downloading newest file and deleting older files scripting

# Load WinSCP .NET assembly
Add-Type -Path "C:\Program Files (x86)\WinSCP\WinSCPnet.dll"
 
# Setup session options
$sessionOptions = New-Object WinSCP.SessionOptions -Property @{
    Protocol = [WinSCP.Protocol]::Ftp
    HostName = "xxxxxx"
    UserName = "xxxxxx"
    Password = "xxxxxx"
}
 
try
{
    # Connect
    $session = New-Object WinSCP.Session
    $session.Open($sessionOptions)
 
    # List files
    $remotePath = "/public_html/Weercam/FI9853EP_00626EA2E6A9/snap"
    $directoryInfo = $session.ListDirectory($remotePath)
 
    # Find old files
    $limit = (Get-Date).AddDays(-1)
 
    $oldFiles =
        $directoryInfo.Files |
        Where-Object { -Not $_.IsDirectory } | 
        Where-Object { $_.LastWriteTime -lt $limit }
 
    # Delete them
    foreach ($oldFileInfo in $oldFiles)
    {
        $oldFilePath =
            [WinSCP.RemotePath]::EscapeFileMask($remotePath + "/" + $oldFileInfo.Name)
        $session.RemoveFiles($oldFilePath).Check()
    } 
 
    Write-Host "Done"
}
finally
{
    # Disconnect, clean up
    $session.Dispose()
}