FTP Indy Delphi Upload

https://stackoverflow.com/questions/33042220/upload-file-to-ftp-server-using-indy

uses
  ...
  OverbyteIcsFtpCli;

procedure FtpUploadFile( 
                             HostName: String; 
                             UserName: String; 
                             Password: String; 
                             UploadFileName: String; 
                             ToHostDir : String );
var
  FTP: TFtpClient;
begin
  FTP := TFtpClient.Create(nil);
  try
    FTP.HostName := HostName;
    FTP.Passive := True;
    FTP.Binary := True;
    FTP.Username := UserName;
    FTP.Password := Password;
    FTP.Port := '21';

    if not FTP.Open then
      raise Exception.Create('Failed to connect: ' + FTP.ErrorMessage);

    if (not FTP.User) or (not FTP.Pass) then 
      raise Exception.Create('Failed to login: ' + FTP.ErrorMessage);

    FTP.HostDirName := ToHostDir;
    if not FTP.Cwd then
      raise Exception.Create('Failed to change dir: ' + FTP.ErrorMessage);

    FTP.LocalFileName := UploadFileName;
    FTP.HostFileName := ExtractFileName(UploadFileName);

    if not FTP.Put then
      raise Exception.Create('Failed to upload file: ' + FTP.ErrorMessage);
  finally
    FTP.Free;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
   FtpLoadFile('rubilaxe.hostoi.com',  
                     '******', '******',
                     IncludeTrailingPathDelimiter( 
                          ExtractFilePath(Application.ExeName) ) +'datafile.zip',
                     '/files'  );
end;

http://beogradsko.blogspot.rs/2018/01/otvarac-kratko-uputstvo-za-instalaciju.html