Instance custom parameter won't apply to "Generate Instances"

I set some transformation as instance custom parameter, it works perfectly when I export, but won’t take effect when I hit “Generate Instances” under File menu.

Was it supposed to work only for exportation?

Version 2.4.2 (1032)

Yes. Generate Instances creates new .glyphs files. Filter parameters are kept in Font Info > Instances of the new file. Is it not there?

Yes, right there.

Now I got it, thanks!