[amibroker] Problem with a For loop

[p_her...@rogers.com]

Can someone help me please with the following code lines

TheAvg1[0] = 0;
TheAvg[0] = ThePrice[0] /14;
for(i=1; i < BarCount; i++)
{
  TheAvg1[i] = TheAvg[ i - 1 ];
  TheAvg[i] = TheAvg1[i] + ThePrice[i] /14;
}

The problem is with: TheAvg1[i] = TheAvg[ i - 1 ];
It returns an EMPTY value
It seems that it doesn't like backward reference [i-1] because I have replaced 
this line with : TheAvg1[i] = 8 and I have no problems.

This is only an example my code is more elaborated, but the problem is still 
the same, I cannot use a [i-1] reference in a for loop: why?

I am using version 5.29Beta

Thanks for your help

Philippe