This script uses the highs and lows of the candles (instead of the close) to make a "channel" to reference while scalping.
Use the green lower line as a guide to go long and the red upper line as a guide to go short. You may use the lines as potential entry points and direction but you may want to consider exiting before the opposite colored line prints, as that may be too late. As always, entries and exits are at the discretion of each trader.
You will need to adjust the "Line Spacing" settings as you change instruments, chart timeframes, and/or volatility increases/decreases.