# Hacks in Kibana 7.5.1

**URL:** <https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598>\
**Category:** Kibana\
**Created:** [January 10, 2020, 12:29pm UTC](https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598 "2020-01-10T12:29:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Aravinda\_Kolla](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@Aravinda\_Kolla](https://discuss.elastic.co/u/Aravinda_Kolla)\
**Post date:** [January 10, 2020, 12:29pm UTC](https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598/1 "2020-01-10T12:29:06Z")

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Can I modify the visData object that a visualization renders using hacks ? How do hacks work? What kind of data objects does a hack handle?

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**Author:** ![joshdover](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/joshdover/32/42020_2.png) [@joshdover](https://discuss.elastic.co/u/joshdover)\
**Post date:** [January 10, 2020, 11:14pm UTC](https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598/2 "2020-01-10T23:14:31Z")

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"hacks" are simply JavaScript modules that get loaded on every page in Kibana. Other than that, there is nothing particularly special about them. They're primarily useful when you want to make sure some logic gets run on pages that don't even know about your plugin.

What exactly are you trying to modify?

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**Author:** ![Aravinda\_Kolla](https://avatars.discourse-cdn.com/v4/letter/a/df788c/32.png) [@Aravinda\_Kolla](https://discuss.elastic.co/u/Aravinda_Kolla)\
**Post date:** [January 13, 2020, 3:28am UTC](https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598/3 "2020-01-13T03:28:40Z")

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@joshdover Hi, I am trying to modify the `visData` Object for every visualisation type. To do so, Can I use `hacks` or do I have to write custom request and response handlers for every visualisation type ?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 10, 2020, 3:28am UTC](https://discuss.elastic.co/t/hacks-in-kibana-7-5-1/214598/4 "2020-02-10T03:28:41Z")

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