title: Cant get custom parameters in Firebase-Analytics with Unity
body: <p><br/>
  i hope you can help me. I use the Firebase Unity SDK 1.1.1 and Unity 5.5.0f3. I use Firebase-Analytics in my game to track different stuff. LogEvents without custom parameters get tracked well but if I try to add custom parameters i can't see the parameters in the Firebase Console.</p>
  
  <p>For Example:</p>
  
  <p>The following function get called every time the player open a Level and i can see this Event in the Console.<br/>
  <i>Level_Played</i> is the name of the Event<br/>
  <i>Level</i> is parameter name.<br/>
  <i>currentLevel</i> is an integer value for the Level</p>
  
  <pre><code>Firebase.Analytics.FirebaseAnalytics.LogEvent("Level_Played","Level", currentLevel);
  </code></pre>
  
  <p>If i try to create an audience to Filter this Event i can select <i>Level_Played</i> as an Event but can't select the parameter name <i>Level</i>. The list is just empty.</p>
  
  <p>Hope you can help me </p>