cannot use iCustom(), need help

Hi ...
I tried to use Icustom() to call indicator (posted below), but it always return value 2438493923 (something like that)
any body can help?

This is the Indicator:
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 SeaGreen
#property indicator_color2 Red

double CrossUp[];
double CrossDown[];
extern int FasterEMA = 4;
extern int SlowerEMA = 8;
extern bool SoundON=true;
double alertTag;


//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(0, DRAW_ARROW, EMPTY,3);
SetIndexArrow(0, 233);
SetIndexBuffer(0, CrossUp);
SetIndexStyle(1, DRAW_ARROW, EMPTY,3);
SetIndexArrow(1, 234);
SetIndexBuffer(1, CrossDown);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start() {
int limit, i, counter;
double fasterEMAnow, slowerEMAnow, fasterEMAprevious, slowerEMAprevious, fasterEMAafter, slowerEMAafter;
double Range, AvgRange;
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 = 0; i <= limit; i++) {

counter=i;
Range=0;
AvgRange=0;
for (counter=i ;counter<=i+9;counter++)
{
AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
}
Range=AvgRange/10;

fasterEMAnow = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i);
fasterEMAprevious = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i+1);
fasterEMAafter = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i-1);

slowerEMAnow = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i);
slowerEMAprevious = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i+1);
slowerEMAafter = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i-1);

if ((fasterEMAnow > slowerEMAnow) && (fasterEMAprevious < slowerEMAprevious) && (fasterEMAafter > slowerEMAafter)) {
CrossUp[i] = Low[i] - Range*0.5;
}
else if ((fasterEMAnow < slowerEMAnow) && (fasterEMAprevious > slowerEMAprevious) && (fasterEMAafter < slowerEMAafter)) {
CrossDown[i] = High[i] + Range*0.5;
}
if (SoundON==true && i==1 && CrossUp[i] > CrossDown[i] && alertTag!=Time[0]){
Alert("EMA Cross Trend going Down on ",Symbol()," ",Period());
alertTag = Time[0];
}
if (SoundON==true && i==1 && CrossUp[i] < CrossDown[i] && alertTag!=Time[0]){
Alert("EMA Cross Trend going Up on ",Symbol()," ",Period());
alertTag = Time[0];
}
}
return(0);
}

Perhaps you could include the iCustom() call and the Print() statement. Just those statements - not the whole EA. There is nothing wrong with the indicator.

the posted indicator is an ema cross indicator that show arrow when there is a cross between two ema's. it will assign a value to its buffer only when there is a cross. but most of the time, when the ema don't cross each other, indicator's buffer will be "empty". empty value in MT4 equals to 7FFFFFFFH or 2147483647.

if you call iCustom from inside EA, its better to check whether the value returned by iCustom equals to EMPTY_VALUE or not.

double vCrossUp = iCustom(NULL,"Indicator name",.....,0,1);
double vCrossDn = iCustom(NULL,"Indicator name",.....,1,1);
if(vCrossUp!=0 && vCrossUp!=EMPTY_VALUE)
{
//signal for buy
}
else if(vCrossDn!=0 && vCrossDn!=EMPTY_VALUE)
{
//signal for sell
}

hope this help

@ Sangmene
that's exactly I have in my code, but it returned the number ALL THE TIME.
I tried to pop up an alert for value of crossup/down unfortunately it always return the number.

I do not know what went wrong, I used lot of indicators in my EA only this have problem.

Can you try create simple EA just to call the indicator and see what the value return from that indicator.

Thank for your response.

i've frequently seem the coding style using shift [i-1] like the above indicator:
when i = 0, this code trying to access the future value of ema.

the easiest fix: change every reference to i-1 with i
the more "proffessional fix", don't use fasteremaafter and sloweremaafter. comparing faster/slower ema now and faster/slower ema previous is sufficient in detecting the crossing event of both ema's.

other problems are repainting arrow and "multiple alert".

attached is the fixed indy. for ea code that checking iCustom value:

halo sangmane,

saya dari indonesia juga...
Can you help me with this, you can see the picture i attach. is there any way in mq4 that can show a number of bar after last MA Crossed and displayed in Chart.
http://forum.mql4.com/c/forum/2010/05/_____max_1.gif

Thanks for your help.