[amibroker] Scaling issue

["paulradge" <paulradge@xxxxxxxxxxxxxxx>]

Hi all,
          i'm trying to learn to add to positions in a system that i've i've 
already backtested and i'm happy with,,,i've read through the help section 
and now trying to stick a few peices of the puzzle together,,

my initial system is this,,,
Longsetup=xyz;
buy=ref(longsetup,-1);
buyprice=open;
positionsize=10000;
settradedelays=(0,0,0,0);
sell=cross of ma(xyz);


my idea was to add another position on the second day if that day is an up 
day and happy to use the closing price as i'm watching it close myself,,,

here's what i tried after reading the help file,,,,clearly i'm lost as it's 
not working at all not even the firstpurchase
and i'm unsure how to instruct the second purchase to buy the close,,,
any scaling advice please
regards

Paul

fixeddollaramount=10000;

firstpurchase=Cum(Ref(Longsetup,-1)==1);

Secondpurchase=Cum(C>O)==1;

Buy=IIf(firstpurchase,1,IIf(Secondpurchase,sigScaleIn,0));

PositionSize=fixeddollaramount;

BuyPrice =Open;






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