title: Remove flex license key from Flex builder 3
body: <p>I had installed flex builder 3 plug-in in Eclispe 3.4. Now the license is expired. So i need to add another license into the same. But i could not able to change the license key because the option is disabled.</p>
  
  <p>So please any have idea how to change the license key in eclipse with flex builder plug-in 3.</p>
  
  <p>Thanks,
  Ravi</p>