Pullback System # 1 - problem with BuyPrice

["Tomasz Janeczko" <tj@xxxx>]

Hello,

There is a problem with the Pullback System # 1
formula from AFL library that causes wrong results
when back-tested on AmiBroker 3.59 and above 
(the versions supporting *price variables ):

The problem is that the formula 
uses reserved variable BuyPrice in a wrong way.
As it is written in the tutorial section of the guide
BuyPrice controls the price at which the long trade is open.

To fix the formula you should use different name for the
variable than BuyPrice - for example buyp as shown in the fixed
formula below:

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;
buyp = valuewhen( buy, open,1);
sell = c > buyp or l < ref(llv(l,2),-1);

buy = exRem(buy,sell);
sell = exRem(sell,buy);


Best regards,
Tomasz Janeczko
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