title: Do wildcards exist for Firebase Fuctions on Storage?
body: <p>I've been using successfully Firebase Functions to perform operations on files I've been uploading to Firebase Storage.</p>
  
  <p>What I currently want to do is access the folder into which I'm shoving data by using wildcards, with the same method of implementation as how it works for the Realtime Database + Firestore. However, whenever I try to access these parameters, they exclusively return <code>null</code>.</p>
  
  <p>Is this not possible?</p>
  
  <p>Here's an example of my code:</p>
  
  <pre><code>  exports.generateThumbnail = functions.storage.object('user-photos/{userId}/{publicOrPrivate}').onChange(event =&gt; {
      const privateOrPublic = event.params.publicOrPrivate;
      const isPrivate = (event.params.publicOrPrivate == "private");
      const userId = event.params.userId;
  
      console.log("user id and publicOrPrivate are", userId, privateOrPublic);
      //"user id and publicOrPrivate are undefined undefined"
      }
  </code></pre>
  
  <p>Thanks!</p>