Code this metatrader formula in to afl

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red
#property indicator_width1 2
#property indicator_width2 2

double TrendUp[];
double TrendDown[];
int st = 0;
//extern int SlowerEMA = 6;

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators

//SetIndexStyle(0, DRAW_LINE, STYLE_SOLID, 2);
SetIndexBuffer(0, TrendUp);
//SetIndexStyle(1, DRAW_LINE, STYLE_SOLID, 2);
SetIndexBuffer(1, TrendDown);

/*SetIndexStyle(0, DRAW_ARROW, EMPTY);
SetIndexArrow(0, 159);
SetIndexBuffer(0, TrendUp);
SetIndexStyle(1, DRAW_ARROW, EMPTY);
SetIndexArrow(1, 159);
SetIndexBuffer(1, TrendDown);*/

/*for(int i = 0; i < Bars; i++) {
TrendUp = NULL;
TrendDown = NULL;
}*/
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
/*for(int i = 0; i < Bars; i++) {
TrendUp = NULL;
TrendDown = NULL;
}*/
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{

int limit, i, counter;
double Range, AvgRange, cciTrendNow, cciTrendPrevious, var;

int counted_bars = IndicatorCounted();
//---- check for possible errors
if(counted_bars < 0) return(-1);
//---- last counted bar will be recounted
if(counted_bars > 0) counted_bars--;

limit=Bars-counted_bars;

for(i = limit; i >= 0; i--) {
cciTrendNow = iCCI(NULL, 0, 50, PRICE_TYPICAL, i);
cciTrendPrevious = iCCI(NULL, 0, 50, PRICE_TYPICAL, i+1);

//st = st * 100;

counter = i;
Range = 0;
AvgRange = 0;
for (counter = i; counter >= i-9; counter--) {
AvgRange = AvgRange + MathAbs(High[counter]-Low[counter]);
}
Range = AvgRange/10;
if (cciTrendNow >= st && cciTrendPrevious < st) {
TrendUp[i+1] = TrendDown[i+1];
}

if (cciTrendNow <= st && cciTrendPrevious > st) {
TrendDown[i+1] = TrendUp[i+1];
}

if (cciTrendNow >= st) {
TrendUp = Low - iATR(NULL, 0, 5, i);
if (TrendUp < TrendUp[i+1]) {
TrendUp = TrendUp[i+1];
}
}
else if (cciTrendNow <= st) {
TrendDown = High + iATR(NULL, 0, 5, i);
if (TrendDown > TrendDown[i+1]) {
TrendDown = TrendDown[i+1];
}
}
}
//----
return(0);
}
//+------------------------------------------------------------------+