Only some system variables can be set in the VFP config file, the ones that specify location of different components.
You can use _STARTUP configuration item to point to a PRG that can include any VFP commands.

>
>I'm trying to use a config file to change the default value of the system variable _ASCIICOLS in a shipping .exe file.
>I created a file with this in it:
>_ASCIICOLS = 200
>
>I invoke the app like this:
> myapp.exe -cmyconfigfile.txt
>
>The config file is in the same folder as the executable.
>There is no config.fpw file.
>Using Filemon, I see that myconfigfile.txt is being opened and read when I start my app.
>
>However, if look at the value of _ASCIICOLS in my app, the value is always the default value, which is 80.
>
>MESSAGEBOX("INTERNAL: " + SYS(2019, 1)) && This shows my file.
>MESSAGEBOX("EXTERNAL: " + SYS(2019, 2)) && This shows nothing.
>MESSAGEBOX("_ASCIICOLS = " + ALLTRIM(STR(_ASCIICOLS))) && This shows 80.
>
>
>Can I do this?
>
>Thanks,
>Howard