# So how does the new add mod work?

**URL:** <https://discourse.cataclysmdda.org/t/so-how-does-the-new-add-mod-work/18669>\
**Category:** The Toolbox\
**Created:** [February 3, 2019, 4:45am UTC](https://discourse.cataclysmdda.org/t/so-how-does-the-new-add-mod-work/18669 "2019-02-03T04:45:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![DeWolf](https://avatars.discourse-cdn.com/v4/letter/d/df705f/32.png) [@DeWolf](https://discourse.cataclysmdda.org/u/DeWolf)\
**Post date:** [February 3, 2019, 4:45am UTC](https://discourse.cataclysmdda.org/t/so-how-does-the-new-add-mod-work/18669/1 "2019-02-03T04:45:13Z")

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Or rather why am I unable to make the combat knife also have an add mod modifier giving an addition underbarrel slot.