Build an EA with Super signal.mq4

This is the original code, But too old for the new mq4. I want to build an EA using this on EA Builder that I have already, but new language prevents this. Can anyone help me, please?

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//| super-signals.mq4 |
//| Copyright © 2006, Nick Bilak, beluck[AT]gmail.com |
//+——————————————————————+
#property copyright “Copyright © 2006, Nick Bilak”
#property link “http://www.forex-tsd.com/”

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Aqua

extern int SignalGap=10;

int dist=24;
double b1[];
double b2[];

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//| |
//+——————————————————————+
int init() {
SetIndexStyle(0,DRAW_ARROW,STYLE_SOLID,1);
SetIndexStyle(1,DRAW_ARROW,STYLE_SOLID,1);
SetIndexArrow(1,233);
SetIndexArrow(0,234);
SetIndexBuffer(0,b1);
SetIndexBuffer(1,b2);
return(0);
}
//+——————————————————————+
//| |
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int start() {
int counted_bars=IndicatorCounted();
int k,i,j,limit,hhb,llb;

if (counted_bars<0) return(-1);
if (counted_bars>0) counted_bars–;
limit=Bars-1;
if(counted_bars>=1) limit=Bars-counted_bars-1;
if (limit<0) limit=0;

for(i=limit;i>=0;i–) {
hhb=Highest(NULL,0,MODE_HIGH,dist,i-dist/2);
llb=Lowest(NULL,0,MODE_LOW,dist,i-dist/2);

if (i==hhb)
b1[i]=High[hhb]+SignalGap*Point;
if (i==llb)
b2[i]=Low[llb]-SignalGap*Point;
}
return(0);
}

//+——————————————————————+

Super-signals.png super-signals-1.png