While specified a symbol that different from current symbol,the MACD indicator doesn't work.

[Wei Sun]

 In MACD indicator, use "AUDUSD" instead of "NULL" as below:

 ExtFastMaHandle=iMA("AUDUSD",0,InpFastEMA,0,MODE_EMA,InpAppliedPrice);
 ExtSlowMaHandle=iMA("AUDUSD",0,InpSlowEMA,0,MODE_EMA,InpAppliedPrice);

and then it can't work unless current symbol is  "AUDUSD".