how to create a subsite using API programming

Hi Everyone

I am trying to create a sub site using API

using (SPSite site = new SPSite("http://ramu-pc:1234/"))
      {
                    using (SPWeb newWeb = site.OpenWeb())
                    {                         
                        newWeb.AllowUnsafeUpdates = true;
                        //string template="STS#0";
                        SPWebCollection subsites = newWeb.Webs;
                        SPWeb newSubWeb = subsites.Add("Subsite", " SubSite name ", "Site description", 1033,"STS#0",true,false);
                        newWeb.Update();
                    }
                }

              
        }

After building the application i am getting nothing (the subsite is not creating)

is there any wrong with the code can anybody suggest me how to resolve this

thanks in advance

Ramu