Not more than 3 pairs opened at a time

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I am very new in MQL4 coding. I downloaded this EA  online. I am trying to modify it such that if I load it on say about 15 different pairs, I do not want trade to open in more than 3 pairs at any particular time even if the conditions for opening trade in the other pairs are met. Thank you all for your anticipated response.
 

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Sergey Golubev:

I have actually added the following  code to the EA as advised but it seems not working as expected:


int SYMBOL_NUMBER_LIMIT = 3;

string COUNTED_SYMBOLS[];

ArrayResize(COUNTED_SYMBOLS, SYMBOL_NUMBER_LIMIT, 0);

for(int s=0; s<SYMBOL_NUMBER_LIMIT; s++) COUNTED_SYMBOLS[s]="";

int SYMBOLS_IN_TRADE_SO_FAR = 0;

bool NEW_TRADE_PERMISSION = true;

int ALL_POSITIONS =  OrdersTotal();//PositionsTotal();

if(ALL_POSITIONS > 0)

{

        for(int index=0; index<ALL_POSITIONS; index++)

        {

                string THIS_SYMBOL = OrderSymbol();//PositionGetSymbol(index);

                bool Symbol_already_counted = false;

                for(int i=0; i<SYMBOL_NUMBER_LIMIT; i++)

                {

                        if(COUNTED_SYMBOLS[i]==THIS_SYMBOL)

                        {

                                Symbol_already_counted = true;

                                break;

                        }

                if(Symbol_already_counted) continue;

                else

                {

                        SYMBOLS_IN_TRADE_SO_FAR++;

                        if(SYMBOLS_IN_TRADE_SO_FAR >= SYMBOL_NUMBER_LIMIT)

{

                                NEW_TRADE_PERMISSION = false;

                                break;

                        }

                        for(int j=0; j<SYMBOL_NUMBER_LIMIT; j++)

                        if(COUNTED_SYMBOLS[j]=="")

                        {

                                COUNTED_SYMBOLS[j] = THIS_SYMBOL;

                                break;

                        }

                }

        }

}

 

 }

 
OLUFEMI ODUNUGA:

I have actually added the following  code to the EA as advised but it seems not working as expected:

...

I am not a coder so I can not help sorry.

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Thank you.

  
int SYMBOL_NUMBER_LIMIT = 3;
string COUNTED_SYMBOLS[];
ArrayResize(COUNTED_SYMBOLS, SYMBOL_NUMBER_LIMIT, 0);
for(int s=0; s<SYMBOL_NUMBER_LIMIT; s++) COUNTED_SYMBOLS[s]="";
int SYMBOLS_IN_TRADE_SO_FAR = 0;
bool NEW_TRADE_PERMISSION = true;
int ALL_POSITIONS =  OrdersTotal();//PositionsTotal();
if(ALL_POSITIONS > 0)
{
        for(int index=0; index<ALL_POSITIONS; index++)
        {
                string THIS_SYMBOL = OrderSymbol();//PositionGetSymbol(index);
                bool Symbol_already_counted = false;
                for(int i=0; i<SYMBOL_NUMBER_LIMIT; i++)
                {
                        if(COUNTED_SYMBOLS[i]==THIS_SYMBOL)
                        {
                                Symbol_already_counted = true;
                                break;
                        }
                if(Symbol_already_counted) continue;
                else
                {
                        SYMBOLS_IN_TRADE_SO_FAR++;
                        if(SYMBOLS_IN_TRADE_SO_FAR >= SYMBOL_NUMBER_LIMIT)
{
                                NEW_TRADE_PERMISSION = false;
                                break;
                        }
                        for(int j=0; j<SYMBOL_NUMBER_LIMIT; j++)
                        if(COUNTED_SYMBOLS[j]=="")
                        {
                                COUNTED_SYMBOLS[j] = THIS_SYMBOL;
                                break;
                        }
                }
        }
}
 
 }
 
OLUFEMI ODUNUGA:

This is the EA after modification.  It actually compiled and opened 3 pairs. However, once the 3 pairs closed in profit, it does not open another trade again. What I want is for the EA to have not more than 3 pairs opened at any particular time. 

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