Duplicate: Explore and backtest dont give me the same results

AFL Programming
#1

I have a big problem. When I use my AFL program in real life, the FILTER command does not give me the same results as the BUY command the day after.
I mean, I use a FILTER like:

//variable ultimabarra--> Just to avoid delisted stocks
Ultimabarra=( Ref(BarIndex(),1) == LastValue(BarIndex()) OR BarIndex()==LastValue(BarIndex() ) )
AND Year()<=2022 ;

Filter= C>=HHV (c,100) AND NOT ultimabarra;

I explore using stocks data updated until yesterday and I obtain, e.g. 10 stocks, order by one rule,:
IBM
Apple
Microsoft,
Citibank,
Amazon,
America bank,
etc

I should buy for example, the first 2 stocks: IBM and Apple

But the day after, when I have the new stocks data updated, I launch the AFL code, using the BUY command: (I use tradelay 1)

BUY= C>=HHV (c,100) AND NOT ultimabarra;

The BUY command has exactly the same rules as the FILTER.
But the backtest only buys 1 stock, for example citibank.

So, explore and backtest are different.
But, and this is incredible, if I use the explore using

FILTER= BUY;

Then the FILTER command in the explore mode shows me only Citibank. And the explore and backtest are the same.
But, the rest of the stocks should be shown because they accomplish the rules.

I can not understand this. I need the FILTER and the BUY show the same stocks, in order to use the AFL in real time..
Any idea?
Thanks

#2

First and formemost SEARCH THE FORUM before posting.
If you searched
https://forum.amibroker.com/search?q=explore%20backtest

you would find plenty of answers.

Including this

Also when posting the formula, please make sure that you use Code Tags (using </> code button) as explained here: How to use this site.

Using code button

Code tags are required so formulas can be properly displayed and copied without errors.

#3

User did not search before posting
https://forum.amibroker.com/search?q=explore%20backtest