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[amibroker] pullback system. Is it right?



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hi,

I'm still in the process of learning AFL I found the following code,

// Pullback System # 1
condition1 = ref(c,-2) < ref(c,-3) and ref(c,-1) < ref(c,-2);
condition2 = h > ref(h,-1);
filter = c > ma(c,50);

buy = condition1 and condition2 and filter;
buyPrice = valuewhen( buy, open,1);
sell = c > buyPrice or l < ref(llv(l,2),-1);

buy = exRem(buy,sell);
sell = exRem(sell,buy);
 
see also: http://www.amibroker.com/library/formula.php?id=24

Is it right to assume that this system is not possible because 
condition2 states the high of "the day of purchase" should be greater 
than yesterdays high while we buy at the open.

regards, Ed


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