title: Changing version and build number for a specific target Fastlane
body: <p>I am trying to implement Fastlane into a Xcode project containing over 30 apps.</p>
  <p>At this moment I am stuck with the lane that builds the app for the &quot;AppStore&quot; as it has to change the version and the build number for a specific target. The code for my lane is:</p>
  <pre><code>desc &quot;Archives and creates the app for the AppStore&quot;
  lane :build_appstore do |options|
      scheme = options[:scheme]
      output_directory = options[:output_directory]
      configuration = options[:configuration]
      export_method = options[:export_method]
  
      bundle_id = options[:bundle_id]
      version = options[:version]
      build = options[:build]
  
      # Used for increment_version_number. Does it work?
      ENV[&quot;APP_IDENTIFIER&quot;] = options[:bundle_id]
        
      increment_version_number(
          version_number: version
      )
      increment_build_number(
          build_number: build
      )
        
      gym(
          scheme: scheme,
          output_directory: output_directory,
          configuration: configuration,
          export_method: export_method
      )
  end
  </code></pre>
  <p>The lanes works but when I have a look at the project, I see that all targets have the version and build number changed which is a little but of inconvenient.</p>
  <p>Any ideas??</p>