[amibroker] Contracts and position value

["Andrew Smith" <andy_kovacs@xxxxxxxxxxx>]

Hi - I was wondering if anyone could explain this 
to me:
 
Im using the following code
 
stop=IIf(<FONT 
color=#ff0000>Buy,stoplong,<FONT 
color=#0000ff>IIf(Short<FONT 
size=2>,stopshort,0)); // stoplong and stopshort are 
values calculated by a trailing stop jscrip I found on the site

PointValue = <FONT 
color=#800080>1;
RoundLotSize=<FONT 
color=#800080>1;
risk=100; //fixed value in $ per position
NumContracts = IIf(risk/stop><FONT 
color=#800080>1,round(risk/stop),<FONT 
color=#800080>0);
MarginDeposit=<FONT 
color=#800080>1;
PositionSize<FONT 
size=2> = NumContracts * <FONT 
color=#ff0000>MarginDeposit;
Now, my problem is the following. When I run an explore, 
numcontracts works fine and I get the numbers Im expecting. However, when I 
backtest, I get exponential results. Fr the first position of any instrument I 
get 1e006, the rest are zero. Position value comes out at 0.
How are contracts and position value calculated? If I 
know this I can amend my code ...
Thanks
Andy






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