[amibroker] ParamOptimize - different backtest results

[Thomas Ludwig <Thomas.Ludwig@xxxxxx>]

In the Amibroker Feedback Center is a request for an "Optimizable Param()" . 
Graham and Tomasz pointed out that this functionality already exists via the 
following function:

function ParamOptimize( TitleName, default, minv, maxv, step )
{return Optimize( TitleName, Param( TitleName, default, minv, maxv, step ), 
minv, maxv, step );}

As a matter of fact I had used this function before but had had problems with 
it. Now I took the opportunity to try it out again. I tested a trading system 
at first with using "Optimize" and performed a second backtest where I 
replaced "Optimize" with "ParamOptimize" without any other changes. The 
results of both backtests were completely different! This is true regardless 
if I copy above function into the formula editor or use it via #include 
<ParamOptimize.afl> (this file is in my Formulas/Include" folder).

Could anybody try out if he/she is confronted with the same problem? If yes - 
what could be wrong here?

Thanks in advance.

Greetings, Thomas

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