The author of the idea - Sergey Efimenko

mq5 code author - barabashkakvn

Stop loss (Stop Loss) and take profit (Take Profit) initial setting if these properties are not set for the position. Trailing works only for profitable positions.

If Only zero values is "true" - this means searching for positions having either stop loss, or take profit equal to zero. As soon as such a position is found:

• If this is a BUY position
• a stop loss is set: current price (Bid) minus stop loss
• a take profit is set: current price (Bid) plus take profit
• If this is a SELL position
• a stop loss is set: current price (Ask) plus stop loss
• a take profit is set: current price (Ask) minus take profit

If the Only zero values parameter is "false", stop loss (Stop Loss) and take profit (Take Profit) parameters are disabled.

The EA works for all positions on the current symbol - unique magic number is not considered.

To see how it all works, uncomment the strings:

   ExtStopLoss    = InpStopLoss     * m_adjusted_point;     ExtTakeProfit  = InpTakeProfit   * m_adjusted_point;     ExtTrailingStop= InpTrailingStop * m_adjusted_point;     ExtTrailingStep= InpTrailingStep * m_adjusted_point;    //m_trade.Buy(2.0);  //m_trade.Sell(1.0);  //---     return(INIT_SUCCEEDED);    }  

and launch the EA in the strategy tester.