How do I Backtest Mutliple Currencies ?

How do I backtest strategies in MetaTrader that use multiple Currency Crosses at the same time?
The Strategy Tester only seems to see the data from the Selected Symbol.

Strategy tester will only backtest one currency at a time. What you would have to do is run each separately, record the results and the add it all together on an excel sheet or something to analyze. Maybe someone knows of another program that can analyze all three together.