[amibroker] barcount and selected value, _trace and printf disagreement

["LongJack" <loveyourenemynow@xxxxxxxx>]

the code below gives an out of range error while I dont think it should.


I just want to access value of an array after the selected bar, to plot a forecast.
I tried with or without var required and I always get the same error, even if start<barcount( at least from what I can read in the interpretation window).
But if I trace it I get that start=barcount,which explain the error.
How can it be?


SetBarsRequired( -2, -2); 
bi=BarIndex();
	Plot(C,"C",colorBlue);
	start=SelectedValue(bi)-bi[0];
	printf("\n selected bi="+SelectedValue(bi));
	printf("\n bi[0]="+bi[0]);
	printf("\n start=selected bi-bi[0]="+start);
	printf("\n barcount"+BarCount);
	printf("\n start+1="+(start+1));
	printf("\n c[start]="+C[start]);
	

	_TRACE("\n selected bi="+SelectedValue(bi));
	_TRACE("\n bi[0]="+bi[0]);
	_TRACE("\n start=selected bi-bi[0]="+start);
	_TRACE("\n barcount"+BarCount);
	_TRACE("\n start+1="+(start+1));
	_TRACE("\n c[start]="+C[start]);
	_TRACE("\n c[start+1]="+C[start+1]);
	

	_TRACE("\n c[start+1]="+C[start+1]);
	printf("\n c[start+1]="+C[start+1]);

Regards
Ly



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