title: TFS 2012 hide content of work item field based on rights
body: <p>is there a way to hide the content of a field based on a role?</p>
  
  <p>I thought about creating a serverside plugin which empties the field if the user does not have permission to view the field and repopulate it on save. But I don't know how to do this, I did not find any event which I could use. Any idea?</p>
  
  <p>My first intent was to use the EMPTY rule but this really clears the content and does not repopulate it. Also the READONLY rule is not acceptable for us. Do you have any idea?</p>
  
  <p>I know this was already requested <a href="http://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2088177-add-ability-to-hide-mask-fields-in-a-work-item-bas" rel="nofollow">http://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2088177-add-ability-to-hide-mask-fields-in-a-work-item-bas</a> but I need the functionality now.</p>
  
  <p>I also thought about creating a workitem where the hidden fields are stored in and linking it to the other work item but this is not the solution I want ...</p>