Creating a Multi-Currency Expert Advisor

 The idea of the trading system is as follows: market entries are performed when MACD's main and signal lines intersect in the current trend direction.

2. Trend is determined based on the with the specified period. If the current EMA value is greater than the previous one, the trend is seen as growing (Ema current > Ema previous). Alternatively, if current EMA is below the previous one, the trend is considered to be falling (Ema Current< Ema previous).

3. Trading Signals:

• Buy signal: the main MACD line crosses the signal line upwards (Accurint>signal_current && macd_previous<signal_previous).
  
• Sell signal: the main MACD line crosses the signal line downwards (macd_current<signal_current && macd_previous>signal_previous). The below figure shows Buy and Sell cases.