void SetQVWSSetting(
	Guid qvwsID,
	QVWSSettings qvwsSetting
)

Sub SetQVWSSetting ( 
	qvwsID As Guid,
	qvwsSetting As QVWSSettings
)

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using QMSAPI;

class Program
{
     static void Main(string[] args)
     {
         try
         {
            // create a QMS API client
            IQMS2 apiClient = new QMS2Client();

            //retrieve a time limited service key
            ServiceKeyClientMessageInspector.ServiceKey = apiClient.GetTimeLimitedServiceKey();
            *********************************************************************************************
            //get a list of all QVWSs
            ServiceInfo[] webServers = apiClient.GetServices(ServiceTypes.QlikViewWebServer);

            //get QVWS settings for the first QVWS in the list
            QVWSSettings settings = apiClient.GetQVWSSetting(webServers[0].ID);
            if (settings != null)
            {
                 //retrieve and print the current name
                 Console.WriteLine("Port before change: " + settings.Port);
                 //change the port
                 settings.Port = 90;
                 //save settings
                 apiClient.SetQVWSSetting(settings);
                 Console.WriteLine("Settings saved. Port changed.");
            }
         }
         catch(Exception e)
         {
             Console.WriteLine("An error occured: " + e.Message);
         }
         // wait for user to press any key
         Console.ReadLine();
     }
}