All the zip codes I checked had 7 characters. On my screen there was something like a box in the third position, when I checked it by
?Asc(substr(_StrTo128C('74970271'),3,1)) I see that it's chr(129). Maybe it's a question of setting the correct language or codepage for the barcode font?

NB! For auto quote, see attached picture.

>Please take a look at the picture below:
>
>http://www.acrisoft.bizland.com/label_128.jpg
>
>at the 74970270 ZIP. (please teste the function with this zip if you will)
>
>Above there is the return string by function before convert to ttf.
>
>does it have 6 chars or 7 as others ?
>
>Could that " be 2 ' ' , instead of one " ?
>
>ps. I didnt find where to enable auto quote as you asked.
>
>
>Moises