Hi guys, I´m really new to metastock, and I´d like to point out something I havent been able to figure out by myself. I´m using metastock 9.0 Ok ... we have the system tester, and we have the expert advisor. THEY SHOULD GIVE YOU THE SAME RESULTS IF USED WITH THE SAME SYSTEM ON THE SAME SECURITY, RIGHT ? Ok ... here´s the deal ... If I run, for example, the PS Stock RSI system with 500 periods in the System tester, and I attach the same system (PS Stock Rsi) to the same security, they point me the same orders (buy/sell points) ... Well, not exactly the same, because the System Tester makes the trade on the opening of the next day, but anyways, you can clearly see that on the charts that there´s a one bar divergence. But if I run the System tester with a period LESS than 500 periods prior, everything gets different ... the same system (PS Stock Rsi) on the same security is going to generate MANY LESS trades than compared to the expert advisor ! If i view the details of the system test, on the ORDERS tab, I see that ALL the trades that the expert advisor pointed out are there, but they just get "CONSIDERED" and "PLACED", and never executed, because of the following: "CANCELLED - OPEN COST" I hope I made myself clear ... Running System Tester with 500 periods or more: same results as Expert Advisor ... Running System tester with LESS than 500 periods: same results, BUT they dont become actual trades because of "CANCELLED - OPEN COST" ... If this is an issue, how can I system test the system in the last month only for example ? The orders are the same, but they arent realized because of OPEN COST .... so I can´t really know how the system has performed on the last month. Thanks a lot... Felipe

Hey patrick, that helped a lot, thanks, but I´m still having some issues. I would appreciate your help again. I understood what you said and I went for some Points Only tests ... But now ... I´m having a lot of "CANCELLED - POSITION LIMITS" going on ... Just for you to have an idea, on the first security I ran the system, I got 162 Considered/Open orders, but ONLY EIGHT executed ... (154 got cancelled because of POSITION LIMIT"s ... ) Do you know what´s going on ? and what does it mean ? Thanks in advance, nice trades. Felipe.