# How to make a extrafield be visible ( or be enable ) by the other extrafield

**URL:** <https://www.dolibarr.org/forum/t/how-to-make-a-extrafield-be-visible-or-be-enable-by-the-other-extrafield/20515>\
**Category:** Other native modules\
**Created:** [April 6, 2021, 4:26pm UTC](https://www.dolibarr.org/forum/t/how-to-make-a-extrafield-be-visible-or-be-enable-by-the-other-extrafield/20515 "2021-04-06T16:26:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![trekmorris](https://www.dolibarr.org/forum/letter_avatar_proxy/v4/letter/t/dfb087/32.png) [@trekmorris](https://www.dolibarr.org/forum/u/trekmorris)\
**Post date:** [April 6, 2021, 4:26pm UTC](https://www.dolibarr.org/forum/t/how-to-make-a-extrafield-be-visible-or-be-enable-by-the-other-extrafield/20515/1 "2021-04-06T16:26:42Z")

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Hi

I make two extrafields name A and B .  
And i want to enable B if value of A is 1 .  
I try to use the visible option in extrafield , but i don’t know how to write expression .  
Are there anyone know how to do this ?