Returning the status of a task executed in asynchronous mode

MetaServletCaller.bat --tac-url=http://localhost:8080/org.talend.administrator/ 
--json-params="{'actionName':'runTask','authPass':'admin','authUser':'admin@company.com', 
'mode':'asynchronous','taskId':'2502'}" --format-output

{
  'execRequestId':  '1406817216723_97nsV',
   'executionTime': {
     'millis': 1069,
     'seconds': 1
  },
   'returnCode': 0
}

MetaServletCaller.bat --tac-url=http://localhost:8080/org.talend.administrator/ 
--json-params="{'actionName':'getTaskExecutionStatus','authPass':'admin',
'authUser':'admin@company.com','execRequestId': '1406817216723_97nsV'}" --format-output

{
  'execBasicStatus':  'RUNNING',
   'execDetailedStatus':  'RUNNING',
   'execDetailedStatusLabel':  'Running...',
   'executionTime': {
     'millis': 309,
     'seconds': 0
  },
   'returnCode': 0
}

{
  'execBasicStatus':  'ERROR',
   'execDetailedStatus':  'JOB_ERROR',
   'execDetailedStatusLabel':  'Job ended
        with error(s)',
   'executionTime': {
     'millis': 300,
     'seconds': 0
  },
   'jobExitCode': 1,
   'returnCode': 0
}