# Controls Visualization: empty values

**URL:** https://discuss.elastic.co/t/controls-visualization-empty-values/151169
**Category:** Kibana
**Created:** [October 5, 2018, 7:33am UTC](https://discuss.elastic.co/t/controls-visualization-empty-values/151169 "2018-10-05T07:33:57Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Alufolie](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@Alufolie](https://discuss.elastic.co/u/Alufolie)
#### Post date: [October 5, 2018, 7:33am UTC](https://discuss.elastic.co/t/controls-visualization-empty-values/151169/1 "2018-10-05T07:33:57Z")

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Hello,  
I'am using Kibana in v6.3.2 and I'am trying to visualize IP Networks by there names and devices. So I've created a visualization to filter networknames. Some of these Networknames are just empty Strings and this causes the following behaviour:

The controls visualization seems to select empty values in default.

 ![2018-10-05%2008_42_01-Window](https://us1.discourse-cdn.com/elastic/original/3X/f/5/f5d19cafb948469de0aa9b64d53412312068a002.png)

After adding and applying a Network which I'd like to filter to, the selected Network and the empty ones are shown in my dashboard.  
 ![2018-10-05%2008_45_26-Window](https://us1.discourse-cdn.com/elastic/original/3X/b/7/b7802f0f16a417ea64a2d90962c740687dda782c.png)  
 ![2018-10-05%2008_44_10-Window](https://us1.discourse-cdn.com/elastic/original/3X/b/c/bce84b8ea0e638bb48e4f5cc145fc35c73505c24.png)  
 ![2018-10-05%2008_43_44-Window](https://us1.discourse-cdn.com/elastic/original/3X/8/3/837afaa99dee4539fe90f541e401b36fee470498.png)

I think this is not an expected behaviour.

best regards  
Alufolie

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<div class="post-metadata">

### Author: ![jen-huang](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jen-huang/32/74327_2.png) [@jen-huang](https://discuss.elastic.co/u/jen-huang)
#### Post date: [October 11, 2018, 9:16am UTC](https://discuss.elastic.co/t/controls-visualization-empty-values/151169/2 "2018-10-11T09:16:32Z")

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What happens if you delete the empty option? Does it stay deleted after clicking clicking Clear form or does it come back?

This may warrant a [Github issue](https://github.com/elastic/kibana/issues/new?template=Bug_report.md).

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<div class="post-metadata">

### Author: ![Alufolie](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@Alufolie](https://discuss.elastic.co/u/Alufolie)
#### Post date: [October 11, 2018, 10:07am UTC](https://discuss.elastic.co/t/controls-visualization-empty-values/151169/3 "2018-10-11T10:07:52Z")

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after clicking on "clear form" the empty field option comes back and the viz is in default state, like described in the first post.

I will create an issue on github for this.

-Alufolie

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 8, 2018, 10:07am UTC](https://discuss.elastic.co/t/controls-visualization-empty-values/151169/4 "2018-11-08T10:07:54Z")

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