add strings: IP, PORT, TIME, METHOD then input this
  
  
  var resp = wc.UploadString("https://yourapi", "POST",
                   $"{{ \"target\":\"{target}\", \"port\": {port}, \"duration\": {time}, \"method\": \"{method}\"}}");
                MessageBox.Show($"Attack sent to {target} using port {port} for {time} Second/s with {method} method.");