title: GA for iOS and custom dimensions
body: <p>We've setup Google Analytics in an iOS app which is sending the vendor identifier to distinguish between users on the reports. Here's what we've done:</p>
  
  <p>In Google Analytics we've setup a Custom Dimension as follows:</p>
  
  <p>Name: User identifier
  Scope: User
  Active: True</p>
  
  <p>In the app we add the following in the AppDelegate:</p>
  
  <pre><code>[tracker set:[GAIFields customDimensionForIndex:1] value:uuidString]; // uuidString is the device identifier
  </code></pre>
  
  <p>In the logging window I can see that the value of <code>cd1</code> is the correct value yet our custom report shows no data for the custom dimension.</p>
  
  <p>We are using Google Analytics 3.02.</p>
  
  <p>Does anyone have any idea where we are going wrong?</p>