title: Activiti BPMN - How to pass username in variables/expression who have completed task?
body: <p>I am very new to Activiti BPMN. I am creating a flow diagram in activiti. I m looking for how username (who has completed the task) can be pass into shell task arguments. so that I can fetch and save in db that user who has completed that task.</p>
  
  <p>Any Help would be highly appreciated.</p>
  
  <p>Thanks in advance... </p>