TaskData object not storing Comments, CreatedOn, ExpirationTime in BPMS/BRMS 6

Issue

• While creating new task via AddTaskCommand created date it gets set to null. Please see code snippet below

TaskImpl task = new TaskImpl();
TaskDataImpl taskData = new TaskDataImpl();
taskData.setCreatedOn(new Date());         
task.setTaskData(taskData);
Command<?> cmd = (Command<?>)new AddTaskCommand(task,new ContentDataImpl());            

When the task is created the createdOn date is null. The same thing happens if I try to set an expiry date or date on a task comment