Hello
Just answered myself. The visibility of a variable is global, but proper value
only exists inside the if statement. So outside, the value is indeterminate,
hence the run error.
Still unsure what use a single pass using status("stocknum")==0 could be used
for. In my case I tried to initialise constants a single time rather than for
every symbol iteration, thinking I could save time and memory. TJ no doubt has
this covered.
regards
--- In [email protected], "oceanchimes" <oceanchi...@...> wrote:
>
> Hello all,
> Hope someone can shed some light on this. I thought I could set variable
> constants once by using
>
> if (Status("Stocknum")==0)
> { WLNum=12; }
>
> then later in the exploration/backtest code
>
> symlist = categorygetsymbols(categorywatchlist,WLNum);
>
> This code checks ok, but a run error occurs,
> variable 'WLNum' not initialised before being used.
>
> Easy way out was to remove the if statement. I thought the variable would be
> global andso valid. I'm using latest beta AB ver 5.30.1 and win7.
>
> Since it seems variables declared in the if statement aren't visible to the
> rest of the code, when could you use status("stocknum")==0 ?
> many thanks
>
