HELP TO CHANGE EA TO TRADE Synthetic Indices like volatility 75 step index because now this Ea trade only currency

 
Hi is there any one who can help  me to make this Ea to trade Synthetic Indices like volatility 75 step index because now this Ea trade only currency
 
How to create a simple Multi-Currency Expert Advisor using MQL5 (Part 4): Triangular moving average — Indicator Signals
How to create a simple Multi-Currency Expert Advisor using MQL5 (Part 4): Triangular moving average — Indicator Signals
  • www.mql5.com
The Multi-Currency Expert Advisor in this article is Expert Advisor or trading robot that can trade (open orders, close orders and manage orders for example: Trailing Stop Loss and Trailing Profit) for more than one symbol pair only from one symbol chart. This time we will use only 1 indicator, namely Triangular moving average in multi-timeframes or single timeframe.