How to make Google Books APIs to take ISBN from field other than 020?

• Article Type: General
• Product: Aleph
• Product Version: 20

Desired Outcome Goal:
How to make Google Books APIs to take ISBN from 776 subfield z instead of first 020##?

Procedure:
1. For the OPAC Short View, add 776 to ./xxx01/tab/www_tag_short.lng, and set up subfield z in ./xxx01/tab/edit_field.lng for the format set in Col.8 of ./xxx01/tab/www_tag_short.lng.

2. For the Full VIew, the Google API is hard coded depending on the MARC-TYPE set in tab100.
For MARC-TYPE = 1 it always takes the first field 020 for looking up the title in Google Books.