# Customize graphs in canvas

**URL:** <https://discuss.elastic.co/t/customize-graphs-in-canvas/285614>\
**Category:** Kibana\
**Tags:** canvas\
**Created:** [September 30, 2021, 4:24pm UTC](https://discuss.elastic.co/t/customize-graphs-in-canvas/285614 "2021-09-30T16:24:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mira\_9](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Mira\_9](https://discuss.elastic.co/u/Mira_9)\
**Post date:** [September 30, 2021, 4:24pm UTC](https://discuss.elastic.co/t/customize-graphs-in-canvas/285614/1 "2021-09-30T16:24:52Z")

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Hi , i'm wondering if i can add some changes in my graph's y-axis before being displayed ( i want to set a subtraction ( 100 - value Y) how is that possible? . Another thing i want to skip the "NULL" how can i delete it from my graph

 ![sc1](https://us1.discourse-cdn.com/elastic/original/3X/6/d/6d1def9dd7866a851998b456487600bed1b44fd8.png)

thank you !

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**Author:** ![bhavyarm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bhavyarm/32/22392_2.png) [@bhavyarm](https://discuss.elastic.co/u/bhavyarm)\
**Post date:** [October 25, 2021, 6:59pm UTC](https://discuss.elastic.co/t/customize-graphs-in-canvas/285614/2 "2021-10-25T18:59:33Z")

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@Catherine_Liu can we please get some help here? I expect we need to use expression language and make some changes?

Thanks,  
Bhavya

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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:** [November 22, 2021, 6:59pm UTC](https://discuss.elastic.co/t/customize-graphs-in-canvas/285614/3 "2021-11-22T18:59:46Z")

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