title: GoLang- PostForm request for updating one of the resources of Cloudfoundry App
body: <p>I'm writing go code to access cloudfoundry platform and extract summary of data for all the apps that have been pushed on the cloud.</p>
  
  <p>I can access every app individually and display the data related to each through an <code>http.GET</code> request but I want to be able to update/change some of the data specific to an app. This is sample data returned for one app named <code>xzys</code>:</p>
  
  <pre><code>{
     "metadata": {
        "guid": "71a3c77f-d2791232323-4b7625dq32908492b04f17e",
        "url": "/v2/apps/71a3c77f-d2791232323-4b7625dq32908492b04f17e",
        "created_at": "2000-18-24T",
        "updated_at": "2000-18-27T"
     },
     "entity": {
        "name": "xzys",
        "production": false,
        "space_guid": "65050bcb-81c6-45a2-b6ef-5e7097c7ece1",
        "stack_guid": "89a4fb19-08ef-4c44-90f7-f222a5699fdc",
        "buildpack": null,
        "detected_buildpack": "null,
        "environment_json": {},
        "memory": 1024,
        "instances": 3,
        "disk_quota": 512,
        "state": "STARTED",
        "version": "67124c27-9958-45a7-afc5-5b27007348ab",
        "command": null,
        "console": false,
        "debug": null,
        "staging_task_id": "e901672f958b4ff39d4efb48290367e8",
        "package_state": "STAGED",
        "health_check_timeout": null,
        "staging_failed_reason": null,
        "docker_image": null,
        "package_updated_at": "2014-10-24T12:53:25+00:00",
        "space_url": "/v2/spaces/71a3c77f-d2791232323-4b7625dq32908492b04f17e",
        "stack_url": "/v2/stacks/71a3c77f-d2791232323-4b7625dq32908492b04f17e",
        "events_url": "/v2/apps/71a3c77f-d2791232323-4b7625dq32908492b04f17e/events",
        "service_bindings_url": "/v2/apps/7-4b7625dq32908492b04f17e/service_bindings",
        "routes_url": "/v2/apps/771a3c77f-d2791232323-4b7625dq32908492b04f17e/routes"
     }
  }
  </code></pre>
  
  <p><code>
  So I have a url (</code>/v2/apps/71a3c77f-d2791232323-4b7625dq32908492b04f17e<code>) that contains the summary of info for an individual app. I've been using a</code>http.Postform()` to this url to update just one of the resources of this app (I'm aiming to update the number of Instances for this app). </p>
  
  <p>This is my code for updating the "Instances" resource of my app:</p>
  
  <pre><code>func UpdateInstances(token string){
  
      tr := &amp;http.Transport{
          TLSClientConfig: &amp;tls.Config{InsecureSkipVerify: true},
      }
  
      client := &amp;http.Client{Transport: tr}
  
      req, err := client.PostForm("/v2/apps/71a3c77f-d2791232323-4b7625dq32908492b04f17e", url.Values{"instances" : 4})
      req.Header.Add("Authorization", token)
      if err != nil {
          log.Fatal(err)
      }
      defer req.Body.Close()
  }
  </code></pre>
  
  <p>This doesn't give me any errors but also doesn't update the resource. </p>