BusinessCalendar businessCalendar = Context
.getProcessEngineConfiguration()
.getBusinessCalendarManager()
.getBusinessCalendar(DueDateBusinessCalendar.NAME);
task.setDueDate(businessCalendar.resolveDuedate((String) dueDate));
} else {
throw new ProcessEngineException("Due date expression does not resolve to a Date or Date string: " +
dueDateExpression.getExpressionText());
}