public static void AddTick(string mapName, int pos, string label)
{
RoadMap map = new RoadMap(mapName);
TimeLine TL = map.GetTimeline();
if(TL== null)
{
map.CreateTimeLine(mapName);
}
TL = map.GetTimeline();
TickMark tickmark = new TickMark(label, pos);
TL.NewTickMark(tickmark);
}