# Tags: Exporting Only a Portion of One Field to Another

**URL:** https://community.mp3tag.de/t/tags-exporting-only-a-portion-of-one-field-to-another/17073
**Category:** General Discussion
**Created:** [July 20, 2015, 12:11pm UTC](https://community.mp3tag.de/t/tags-exporting-only-a-portion-of-one-field-to-another/17073 "2015-07-20T12:11:57Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [July 20, 2015, 12:50pm UTC](https://community.mp3tag.de/t/tags-exporting-only-a-portion-of-one-field-to-another/17073/2 "2015-07-20T12:50:12Z")

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> [@ragtag](#):
>
> If possible, how do I export only a portion of the description in a tag field to another field? The string I wish to export is continuous, but it may vary in the number of characters and its position within the tag field- mostly the position will be at the beginning or at the end of the tag field. ...

You may apply an action "Guess values" with a fitting pattern, which may vary depending on the given format of the TITLE string.

Action "Guess values"  
Source format: %TITLE%  
Guessing pattern: %COMPOSER%:%DUMMY%

From:  
TITLE = Verdi: Preludio Atto I (La Traviata)  
To:  
TITLE = Verdi: Preludio Atto I (La Traviata)  
COMPOSER = Verdi

See also ...  
[https://www.google.de/search?q=site%3Aforum...de+Guess+values](https://www.google.de/search?q=site%3Aforums.mp3tag.de+Guess+values)

For a sophisticated example see there ...  
[/t/12651/1](https://community.mp3tag.de/t/12651/1)

DD.20150720.1718.CEST

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