var ctrlman = m_Map.GetCtrlMan();            
	var poiman = ctrlman.GetPOIMan();
	var uiman = ctrlman.GetUIMan();
	
	var group = poiman.FindGroup(BCHART_POI_GROUP_ID);
	if (group) {
		var baritem = group.FindItem(BCHART_POI_ITEM_ID);
		if (baritem) {
			baritem.DestroyMapChart();
			uiman.Update();
		}
	}	

준비중입니다...