The Expert Advisor's trading strategy is based on moving average crossings by the price. The algorithm includes the following functions:

• stop loss order trailing after reaching a certain profit;
• changing a position volume depending on the balance change;
• waiting out losing trades;
• closing unidirectional trades by breakeven;
• limiting losses;
• flat filter.

Parameters

• Take profit - take profit value;
• Stop loss - stop loss value;
• Start trailing if profit > (pips) - trail a stop loss order if the profit exceeds the specified value; 0 - trailing disabled;
• Start with lot - initial position volume increased in proportion to the balance change;
• MA - moving average smoothing period;
• MA Shift - moving average shift relative to the current bar (cannot be less than zero);
• Bars amount - flat filter, number of bars above/below MA line;
• Close losses - close losing trades (yes/no). If "no", a take profit of the previous losing trade is moved to a trade open level (breakeven) when an opposite signal appears. If the previous trade is profitable, it is closed;
• ...maximum deals - maximum available number of floating losing trades. Trades are opened by opposite signals till the limit is reached;
• Close deals if total loss > (%) - close all open trades if their loss exceeds the specified value.
• Close couple orders by breakeven - close unidirectional trades by breakeven (yes/no);
• Slippage (in pips) - allowed slippage when opening a trade;
• Magic number - magic number of trades.

Testing

The EA was tested on the interval May 1 - October 1, 2016, every tick, М30. Testing results are shown on the screenshots.

EA demo signal

EURUSD М30, stop loss order trailing, losing trades are not closed - https://www.mql5.com/en/signals/222800