title: Question about changing parameter value in Swift
body: <p>I am working on a POST request with application / x-www-form-urlencoded. There is a question in the process of specifying parameters to be passed using Alamofire.</p>
  
  <p>I created a parameter variable called <code>passingParameter</code>
  I want to change the parameter at the time the user_id was created.</p>
  
  <pre><code>var passingParameter = [
          "user_id" : "null",
          "user_email" : "null",
          "user_age" : "null",
          "user_gender" : "null",
          "user_birthday" : "null",
          "user_type" : "google"
      ]
  </code></pre>
  
  <p>How do I put an id in the <code>passingParameter</code> variable?</p>
  
  <p>ex) </p>
  
  <pre><code>var passingParameter = [
          "user_id" : "1122445566",
          "user_email" : "null",
          "user_age" : "null",
          "user_gender" : "null",
          "user_birthday" : "null",
          "user_type" : "google"
      ]
  </code></pre>