Amibroker Supertrend formula in Array

[Velocity]

I have a supertrend AFL formula in loop can any expert help in converting it into array:

function SuperTrend(lenATR, width)

{
nATR = ATR(lenATR);
pAvg = (H+L) / 2;

upperBand = pAvg + width * nATR;
lowerBand = pAvg - width * nATR;
isUpTrend = True;
dn = DateNum();

for (i=lenATR; i<BarCount; ++i)
{
if (C > upperBand[i-1])
isUpTrend = True;
else if (C < lowerBand[i-1])
isUpTrend = False;
else
isUpTrend = isUpTrend[i-1];

if (isUpTrend)
lowerBand = Max(lowerBand, lowerBand[i-1]);
else
upperBand = Min(upperBand, upperBand[i-1]);
}

super = IIf(isUpTrend, lowerBand, upperBand);
return super;
}

st = SuperTrend(10,3);

Thanks.