# unable to follow v3 doc on feeder

**URL:** <https://community.gatling.io/t/unable-to-follow-v3-doc-on-feeder/4841>\
**Category:** Gatling (Open-Source)\
**Created:** [February 26, 2019, 2:17am UTC](https://community.gatling.io/t/unable-to-follow-v3-doc-on-feeder/4841 "2019-02-26T02:17:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jack\_Sun](https://avatars.discourse-cdn.com/v4/letter/j/51bf81/32.png) [@Jack\_Sun](https://community.gatling.io/u/Jack_Sun)\
**Post date:** [February 26, 2019, 2:17am UTC](https://community.gatling.io/t/unable-to-follow-v3-doc-on-feeder/4841/1 "2019-02-26T02:17:07Z")

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doc: [https://gatling.io/docs/3.0/advanced\_tutorial/](https://gatling.io/docs/3.0/advanced_tutorial/) -## Step 03: Use dynamic data with Feeders and Checks

follow exact steps (object, csv, data folder…), but using the ${csv\_header} in the POST json body and getting  
compile error: not found: value csv\_header;

any idea?

Thank you

Jack

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<div class="post-metadata">

**Author:** ![Jack\_Sun](https://avatars.discourse-cdn.com/v4/letter/j/51bf81/32.png) [@Jack\_Sun](https://community.gatling.io/u/Jack_Sun)\
**Post date:** [February 27, 2019, 6:21pm UTC](https://community.gatling.io/t/unable-to-follow-v3-doc-on-feeder/4841/2 "2019-02-27T18:21:12Z")

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never mind, the doc says put csv in folder “data”, but actually should be folder “resource”

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<div class="post-metadata">

**Author:** ![slandelle](https://dub1.discourse-cdn.com/flex013/user_avatar/community.gatling.io/slandelle/32/4_2.png) [@slandelle](https://community.gatling.io/u/slandelle)\
**Post date:** [February 27, 2019, 9:56pm UTC](https://community.gatling.io/t/unable-to-follow-v3-doc-on-feeder/4841/3 "2019-02-27T21:56:03Z")

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Fixed, thanks for reporting!