Getting the last low or last high values

API Futures API
1

Hello, as you can see in the chart below, I want to set the last low value as the stop loss. But I couldn’t figure out how to explain this to the software. How can I detect the last low or last high values?

2021-08-29_23-57-38
2021-08-29_23-57-381600×900 95.8 KB

2

Hi. Could you help me understand the issue:

  1. What do those lines on the chart represent for?
  2. Why is Kline OHLC’s lowest price not helpful?