RadScheduler header text update

Hi,

I'm trying to update RadSheduler header text to show daily work hours. I'm implementing this from RadScheduler_ActiveViewChanged method, but the text is not changing unless I change active view. How can I resolve this issue?

Thanks for help

Karoon

private void radScheduler1_ActiveViewChanged(object sender, SchedulerViewChangedEventArgs e)
        {
            toolWindow2.Text = e.NewView.ViewType.ToString();

            if (e.NewView is SchedulerDayViewBase)
            {
                SchedulerDayViewBase dayViewBase = (SchedulerDayViewBase)e.NewView;
              
                dayViewBase.Scheduler.HeaderFormat = "ddd MMM dd";

                UpdateRadSchedulerHeader(dayViewBase);
            }
        }

I'm using the following line in UpdateRadSchedulerHeader method to update text:
((SchedulerHeaderCellElement)dayViewBase.Scheduler.ViewElement.Children[0].Children[j]).Text += "(Time 00:00:00)";