title: Facebook iOS SDK: Tagging friends?
body: <p>Alright, there's a bunch of confusing / conflicting information about whether it's possible to tag people in posts that you make .. so I was wondering what the latest on this is? The docs say that we need to send an array of objects each with <code>id</code> and <code>name</code> params set to the user you'd like to tag, but when I send that request out, I get an error message that says this:</p>
  
  <pre><code>Error Domain=facebookErrDomain Code=10000 "The operation couldn’t be completed. (facebookErrDomain error 10000.)" UserInfo=0x79bf5b0 {error=&lt;CFBasicHash 0x79bca80 [0x1740b48]&gt;{type = mutable dict, count = 3,
  entries =&gt;
      2 : &lt;CFString 0x7989260 [0x1740b48]&gt;{contents = "type"} = &lt;CFString 0x79be240 [0x1740b48]&gt;{contents = "OAuthException"}
      3 : &lt;CFString 0x79b55a0 [0x1740b48]&gt;{contents = "message"} = &lt;CFString 0x79b7f90 [0x1740b48]&gt;{contents = "(#114) An id must be a valid ID string (e.g., "123")"}
      6 : &lt;CFString 0x79bde00 [0x1740b48]&gt;{contents = "code"} = 114
  }
  }
  </code></pre>
  
  <p>I've double checked that the id itself is valid. Any help is much appreciated!</p>
  
  <p>Thanks, <br />
  Teja</p>