Resource control width/height

By the way, i have tried the bellow but it is not finding the control and errors out:

protected void RadScheduler1_FormCreated(object sender, SchedulerFormCreatedEventArgs e)
        {
            if (e.Container.Mode == SchedulerFormMode.AdvancedEdit || e.Container.Mode == SchedulerFormMode.AdvancedInsert)
            {
                RadComboBox x = (RadComboBox)e.Container.FindControl("ResPatient");
            }
        }