Support: add new user wordpress with api aMember

• I have site use cms wordpress and site user aMember Pro ver4.
• I setup the same video http://www.amember.com/p/video/#wp
• Now, on site wordpress. I write function:
  
  Code:

  <?php
  $url = 'http://YOURDOMAIN.COM/amember/api/users';.
   
  $fields = array(
              '_key' => 'SECRETKEY',
              '_format' => 'xml',
              'login' => 'user0001',
              'pass' => 'user0001',
              'email' => 'user0001@yahoo.com',
              'name_f' => 'Mr',
              'name_l' => 'user0001',
      );
   
  $fields_string  = http_build_query($fields);
  //open connection
  $ch = curl_init();
   
  //set the url, number of POST vars, POST data
  curl_setopt($ch,CURLOPT_URL,$url);
  curl_setopt($ch,CURLOPT_POST,count($fields));
  curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
   
  //execute post
  $result = curl_exec($ch);
   
  //close connection
  curl_close($ch);

User add to success aMember. But user haven't worpdress.
If I login into aMember site. I update user 'user0001'. affter user update. This user add to wordpress.
Please, help me!
Thanks

I am currently encountered problem so on such as smiddleton67.
.

The manual, I am created the new and out of sync user successfully.
Thanks you very much!