Tomasz, I found a reply you made to a post in September where you stated the following:
"Yes, because LastValue DOES look into the future and it actually looks ALL bars into the future. The user's guide of course says about that http://www.amibroker.comf?lastvalue "Caveat: since this function fills an entire data array with the last value of another array, it allows a formula to look into the future. "" Although I'm not sure I totally understand this, I assume this would be true only in back testing and walk forward testing. If used to only take trading signals as they actually occur, the future is now. Am I correct that in fact it could be used in a trading system and that it could be "back tested" by paper trading in present time? Thanks.
