multiple currencies

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If I am looking at the hourly chart and I want to assess conditions on two different currency pairs(eurusd and usdchf for example)...can I code a common indicator (MACD for example) to get values from two different currencies within one EA? Is this possible:

double H2,H1;//high for eurusd
double L2,L1;//high for usdchf
H2 = iHigh(Symbol(),60,2);
H1 = iHigh(Symbol(),60,1);

I am wondering if I have to set a global variable if certain conditions are met and then call that within the EA? Any help or insight would be greatly appreciated!

Dan

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Yes, but u can't use it in the strategy tester. It only allows one pair at a time.