find and replace fields [closed]

edit

scenario:

Have two custom fields. Use one field through the doc (more than 2 usages, ex:63 instances of one custom field, doc size ~30+ pages). Have a brilliant idea to change some of them (around 23) to another custom field, very similar, but different ;)

Is there any escape sequence allowing easy search replace fields? (I've tried switch to display field names, copy field name(grey area), then Ctrl-H, and paste to 'Replace With' but got actual value rather than expected 'field name like escape sequence' )

my LO : Version: 5.0.1.2; Build ID: 81898c9f5c0d43f3473ba111d7b351050be20261; Locale: pl-PL (pl_PL)

I can do it manually, but I'd prefer watch PC doing it :)

also if other LibreOffice apps support fields then I would expect similar Search&Replace feature for fields.

Best Regards,

Julian