Won't Upload latest file from local to remote host

try
{
   # Load WinSCP .NET assembly
   Add-Type -Path "WinSCPnet.dll"
   # Set up session options
   $sessionOptions = New-Object WinSCP.SessionOptions -Property @{
   Protocol = [WinSCP.Protocol]::Sftp
    HostName = "varHName"
    UserName = "varUName"
    Password = "varPwd"
    SshHostKeyFingerprint = "ssh-dss 1024 xxxxxxxx...."
   }
 
   $session = New-Object WinSCP.Session
 
   try
   {
      # Connect
      $session.Open($sessionOptions)
      $localPath = "c:\users\ren\dir\"
                $remotePath = "/myHome/Dng/ht/"
      
# Get list of files in the directory
        # $directoryInfo = $session.ListDirectory($remotePath)
      # $directoryInfo = $session.ListDirectory($localPathPath)
      
        # Select the most recent file
        $latest =
            Get-ChildItem -Path $localPath |
            Where-Object {!$_.PsIsContainer} |
            Sort-Object LastWriteTime -Descending |
            Select-Object -First 1
      
        # Any file at all?
        if ($latest -eq $Null)
        {
            Write-Host "No file found"
            exit 1
        }
      # $latest.Name
      $sourcePath = Join-Path $localPath $latest.Name
        $session.PutFiles(
            [WinSCP.RemotePath]::EscapeFileMask($sourcePath),
            [WinSCP.RemotePath]::Combine($remotePath, "*")).Check()
      
      
   }
   finally
   {
      # $session.Dispose()
    }
    exit 0
}
catch
{
    Write-Host "Error: $($_.Exception.Message)"
    exit 1
}