title: Firebase Remote Config: Version condition is disabled for Unity projects
body: <p>I have a project in which I have to change remote config values of some parameters for each version. When I try to use version code while setting conditions in remote config, it is always grayed and not interact-able. </p>
  
  <p>Am I missing something or is this intended? Any other ways to solve this problem other than adding a separate version control parameter by myself?</p>
  
  <p><img src="https://i.stack.imgur.com/WbOFJ.png" alt="Screenshot of greyed out condition selection menu"></p>