index dollar

[Forex Trader]

any here know how to get this one to work??


//+------------------------------------------------------------------+
//| IndexDollar.mq4 |
//| Copyright © 2005, Zmiuka Software Corp. |
//| |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Zmiuka Software Corp."

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 DeepPink

//---- input parameters
extern double GBP0=1.9185;
extern double EUR0=1.356;
extern double CHF0=1.1387;
extern double JPY0=102.6;
//---- buffers
double IndexBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;

//---- indicator line
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,IndexBuffer);
SetIndexEmptyValue(0,0);
ArrayInitialize(IndexBuffer,0);

//---- name for DataWindow and indicator subwindow label
short_name="Index =";
IndicatorShortName(short_name);
SetIndexDrawBegin(0,2);
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();
int limit, i;
double USD;
double Data1, Data2, Data3, Data4;

i=(3000-counted_bars)+1;

while(i>=0)
{
Data1=iClose("GBPUSD",NULL,i);
Data2=iClose("EURUSD",NULL,i);
Data3=iClose("USDCHF",NULL,i);
Data4=iClose("USDJPY",NULL,i);

USD = (GBP0 - Data1) * 100000
+ ((EUR0 - Data2) * 100000)
+ ((Data3 - CHF0) * 100000 / Data3)
+ ((Data4 - JPY0) * 100000 / Data4);

IndexBuffer[i]=USD; Comment("IndexDollar");

i--;
}
//----
return(0);
}
//+------------------------------------------------------------------+



thanks Jannik