Percent range advisor

The Expert Advisor is based on Williams` Percent Range. The EA trades both during low volatility and a trend if MACD is enabled. Two Williams` Percent Range indicators can be used to enter a trade with different parameters, while the third one can be configured to close a trade. Besides, the EA has the trailing stop and stop loss calculation functions depending on the currency pair movement strength.

Inputs

• Lots - lot size (if 0, the lot volume is calculated based on the % of account free margin);
• Percentage of free money - percentage of free margin to open each new trade (applicable when Lots=0);
• MaxSpread - maximum allowable spread to open trades (for floating-spread symbols, to avoid opening with a large spread);
• Magic - unique identifier (use different magic numbers if multiple Expert Advisors run in your terminal);
• TakeProfit - take profit (in points);
• MaxStopLoss - maximum possible stop loss (in points);
• PeriodDynamicStop - dynamic stop loss calculation period (if 0, the maximum stop loss is used);
• DynamicStopFactor - dynamic stop loss calculation multiplier;
• TrailingStopValue - trailing stop value in points (0 - not used);
• OrderComments - comments to opened orders;
• TradeEveryTick - trade each new tick (slows down optimization, but may improve profit in real trading);
• PeriodWPR - WPR (Williams` Percent Range) period;
• LevelsWPR - WPR levels (1-50, automatically converted to lower and upper levels);
• PeriodWPR2 - second WPR period (0 - second WPR is not used);
• EnableMACD - use MACD;
• MACDPeriod1 - fast EMA period in MACD;
• MACDPeriod2 - slow EMA period;
• MACDSignalPeriod - MACD signal line period (0 - disabled);
• EnableAutoClose - auto close of trades;
• PeriodForClose - WPR period to close trades;
• LevelsForClose - WPR levels to close trades;
• AdxPeriod - ADX period;
• MinAdxLevel - ADX minimum level;
• MaxAdxLevel - ADX maximum level;
• Trading start hour - trading start hour;
• Trading end hour - trading end hour;
• DecreaseLot - lot reduction by a specified amount of volume after each transaction;
• IncLotAfterProfit - increase the lot after the profitable close of the previous transaction;
• DecLotAfterLoss - reduce the lot after the unprofitable closing of the previous transaction;
• MaxTradeCount - the maximum number of trades, after which to stop trading (0 - not used);
• MaxLossCount - the maximum number of losing trades, after which to stop trading (0 - not used);
• ShowInfo - show information.