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Bands Scalper

The Expert Advisor works with Stop loss, The Larry Williams Percent Range indicator, The Bollinger Bands indicator and Trailing Stop.
Williams R is an indicator to know the overbought and oversold area.
Bollinger Bands are technical indicators that have three main lines moving following the average price movement over a certain period.

Sell Logic is optimization of the Williams R indicator value and difference between the current price and upper line Bollinger Bands indicator for the oversold area.

Buy Logic is optimization of the Williams R indicator values and difference between bottom line Bollinger Bands indicator and the current price for the overbought area.

The Expert Advisor is optimized for trading on the GBPUSD pairs. The adviser can also work on other currency pairs.


  • Advanced Technology;
  • money management system;
  • no martingale, no grid, no arbitrage;
  • easy to set up.


  • Needed 1:100 leverage as a minimum.
  • Platform: MT4;
  • Broker with fast execution.
  • VPS is recommended.
  • Five-digit accounts.


  • TrailingStar - the distance between open price and current price to start trailing.
  • TrailingStop - trailing stop.
  • TrailingStep - trailing step.
  • Stoploss - order stop loss.
  • Risk - the ratio of Account Balance to trade.
  • Magic - magic number.
  • Slippage - permissible slippage.
  • MaxSpread - maximum value of the current spread.
  • Min_Margin_level - minimal account margin level in percentage for no transactions
  • BB_Period - Bollinger Bands indicator, Averaging period to calculate the main line.
  • BB_Deviation - Bollinger Bands indicator, Number of standard deviations from the main line.
  • WPR_Period - Williams Percent Range indicator, Averaging period for calculation.
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Version 1.10 2017.10.05
Rounding floating point number to a specified accuracy