High/Low from Set Period with Labels

Mark high and low from a set period.
I use it to mark Overnight Low and High of FDAX instrument, to achieve that :
- you need to use candle chart
- you need to use regular trading hours ( to include overnight trades )
- you need to set that on M2 timeframe
- you need to set time begin : 17:30
- you need to set time end : 08:58
- when it will be drawn in 09:02, then let extend it via a hand and then you can disable

Issues :
- it will be visible after finished miminum period time :
-- after 2 minutes on M2 ( 9:02 )
-- after 5 minutes on M5 ( 9:05 )
etc ...