[amibroker] question about counting signals

["itmwh" <toxutao@xxxxxxxx>]

I am trying to count buy signals with the following code . At the 
beginning of the trading day ( session start time 8:30 am) , I set 
the buynum to zero.  

The following code works find ,except that the plotted signal always 
comes one bar later than the actual buy signal occurs.


Could someone advise me what may be the cause ?


//=========count buy signals==================

Buynum[0]=0;
t=TimeNum();

for(i=1; i<BarCount; i++) {


if( T[i]==083000)

   {
     Buynum[i]=0;

    }

else 

     {  if (Buy[i]==1 )

              buynum[i] =Buynum[i-1]+1;
        else
         
              Buynum[i]=Buynum[i-1];
      
      }

 }

 Plot(Buynum,"Buy signal Number",colorRed,styleOwnScale,-1,35,1);











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