title: Passing Variables To Google Cloud Functions
body: <p>I've just finished writing a Google Cloud Function in the Beta Python 3.7 runtime with an HTTP trigger. Now I'm trying to figure out how to pass a string variable to  my function when calling it. I've read the documentation but I haven't found anything on this. </p>
  
  <p>My trigger resembles:</p>
  
  <pre><code>https://us-central1-*PROJECT_ID*.cloudfunctions.net/*FUNCTION_NAME*
  </code></pre>
  
  <p>Am I misunderstanding how Cloud Functions work? Can you even pass variables to them?</p>