[amibroker] Amibroker Crashes

[haiguise]

I have no idea if this qualifies as a bug or what not. Anywho this Crashes 
Amibroker. IF you create the Formula and Add it Amibroker just closes.  I am 
just learning amibroker so if the formula doesnt make sense thats all right


SeasonalArr = Null;
SeasonalWeek=1;

for(i=1;i<BarCount;i+=52)
{
_TRACE(NumToStr(i,BarCount));

        if(i==(BarCount-1))
        {
                SeasonalWeek++;
                i=SeasonalWeek;
        }
        
        SeasonalArr[SeasonalWeek]+=Close[i];
        
        
                
}