title: Get @CucumberOptions tag property using System.getProperty()
body: <p>I am running a maven project in Eclipse for my Cucumber tests.  My test runner class looks like this:</p>
  
  <pre><code>@RunWith(Cucumber.class)
  @CucumberOptions(
          tags = { "@Now" },      
  //      tags = { "@Ready" },
  //      tags = { "@Draft" },
          features = { "src/test/java/com/myCompany/FaultReporting/Features" },
          glue = { "com.myCompany.myApp.StepDefinitions" }
          )
  public class RunnerTest {   
  }
  </code></pre>
  
  <p>Instead of having to hard code the tags into the test runner, I am keen to pass them in using the .command file. (i.e. using System.getProperty("cucumber.tag")</p>
  
  <p>However, I get an error when I add the line of code to the above test runner:</p>
  
  <pre><code>@RunWith(Cucumber.class)
  @CucumberOptions(
          tags = { System.getProperty("cucumber.tag") }
  //      tags = { "@Now" },      
  //      tags = { "@Ready" },
  //      tags = { "@Draft" },
          features = { "src/test/java/com/myCompany/FaultReporting/Features" },
          glue = { "com.myCompany.myApp.StepDefinitions" }
          )
  public class RunnerTest {   
  }
  </code></pre>
  
  <p>The error I get is:
  "The value for annotation attribute CucumberOptions.tags must be a constant expression".</p>
  
  <p>So seems it only wants constants rather than a parameterised value.  Anyone know a clever way round this?</p>