Converting iHighest iLowest from MQL4 to MQL5

Code in MQL4:

double High4=iHigh(Symbol(),PERIOD_H1,iHighest(Symbol(),PERIOD_H1,MODE_HIGH,4,1));

double Low4=iLow(Symbol(),PERIOD_H1,iLowest(Symbol(),PERIOD_H1,MODE_LOW,4,1));

double Med4=(High4+Low4)/2;

bool orderBuy=Ask>Med4;

bool orderSell=Bid<Med4;

etc…

 Code in MQL5:

double iHigh(string symbol,ENUM_TIMEFRAMES timeframe,int index)

{

double high=0;

ArraySetAsSeries(High,true);

int copied=CopyHigh(symbol,timeframe,0,TotalBars,High);

if(copied>0 && index<copied) high=High[index];

return(high);

}

int iHighest(string symbol,ENUM_TIMEFRAMES tf,int count=WHOLE_ARRAY,int start=0)

{

double High[];

ArraySetAsSeries(High,true);

CopyHigh(symbol,tf,start,count,High);

return(ArrayMaximum(High,0,count)+start);

return(0);

}

double iLow(string symbol,ENUM_TIMEFRAMES timeframe,int index)

{

double low=0;

ArraySetAsSeries(Low,true);

int copied=CopyLow(symbol,timeframe,0,TotalBars,Low);

if(copied>0 && index<copied) low=Low[index];

return(low);

}

int iLowest(string symbol,ENUM_TIMEFRAMES tf,int count=WHOLE_ARRAY,int start=0)

{

double Low[];

ArraySetAsSeries(Low,true);

CopyLow(symbol,tf,start,count,Low);

return(ArrayMinimum(Low,0,count)+start);

return(0);

}