[amibroker] How do i write the results of a scan or exploration to a watchlists??

["ronbo" <ronbo@xxxxxxxxxxxxxx>]

i have been trying for day, all kinds of combinations of IIF, and If to get
CategoryAddSymbol("",categoryWatchlit, 0) to write ONLY the symbols meeting
the Buy criteria, and to get CategoryAddSymbol("",categoryWatchlit, 1) to
write ONLY the symbols meeting the Sell criteria.

I have used Filter=Buy or Filter=Sell immediately before the above commands,
but i ALWAYS get the whole list of symbols written into Watch list 0 or 1.
What am i doing wrong with the Filter?  or the CAS command??

My simple code is:

CategoryRemoveSymbol( "", categoryWatchlist, 0 );
CategoryRemoveSymbol( "", categoryWatchlist, 1 );
Buy=Cross( MACD(), Signal() );
//Sell=Cross(Signal(), MACD() );

Filter=Buy;
AddColumn (Buy, "test");
CategoryAddSymbol("", categoryWatchlist, 0);

The Filter works for the Column in the Explore Result---only Buys are shown,
and in the "test" column, only a "1" is shown, but All scanned symbols are
in Watchlist 0.

i'm missing something serious here.  it probably has something to do with
Arrays, and requirement of the IIf and if, then, else commands which i do
not understand.

Not only would i like the code, or a real pointer what i am doing wrong, but
i would like an explanation what is the correct way---or point me to a web
page, help section.

i would like, using scan or exploration:
1. a test of Buy to write the symbol into Watchlist 0,
2. a test of Sell to write the symbol into Watchlist 1,

AND caution--if you are going to copy this code to try it, change the watch
list numbers--0 and 1--otherwise you will delete your current watchlists---0
and 1.

thanks much for the help,
ron

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