title: How can you choose variations for several content experiments?
body: <p>I'm using the Javascript API for Google Analytics Content Experiments and it seems like you have two choices:</p>
  
  <ol>
  <li>Run one experiment at a time and have Google assign the variation, which you can get using <code>chooseVariation()</code>, or</li>
  <li>Run several experiments at a time and assign the variation yourself using <code>setChosenVariation()</code></li>
  </ol>
  
  <p>(1) lets Google control the number of users assigned to each variation, which I need, but I  have several experiments.  This seems pretty basic.  What am I missing?</p>