Creating numbers only?

[orhanyor]

Hello. i tried creating my own fontconvert but unfortunately i get an error with custom fonts so its not usable but your tool converted the font i need without issues! thanks.
is there a way to skip the letters and convert only numbers to keep the file size at minimum thanks

[orhanyor]

i found a work around, i modified the .tff file with editor, deleted the letters and it worked. but would have been nice if we could select only number while converting.