# \[Resolved\]Script is invalid for doc\['kf4'\].value + '-' + doc\['kf5'\].value

**URL:** <https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651>\
**Category:** Kibana\
**Created:** [July 16, 2019, 6:04am UTC](https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651 "2019-07-16T06:04:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cheriemilk](https://avatars.discourse-cdn.com/v4/letter/c/c37758/32.png) [@cheriemilk](https://discuss.elastic.co/u/cheriemilk)\
**Post date:** [July 16, 2019, 6:04am UTC](https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651/1 "2019-07-16T06:04:04Z")

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Hi Team,

In created a script field in kibana-\>Index Patter-\>Create script field with script is doc['kf4'].value + '-' + doc['kf5'].value

When I save the field, it tells me that 'Script is invalid.'  
Please refer to below screenshot below:

 ![scriptfield](https://us1.discourse-cdn.com/elastic/original/3X/9/6/96e9329db7db41f2fb05b863ed2dd14b326d7d0d.jpeg)

Below is the data in elk for kf4 and kf5

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/6/6/66d0dd9d4612a78ac45cd3b5ecd4c514b813e35a.png)

Can you please advice what wrong with the syntax?

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**Author:** ![Marius\_Dragomir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marius_dragomir/32/42087_2.png) [@Marius\_Dragomir](https://discuss.elastic.co/u/Marius_Dragomir)\
**Post date:** [July 18, 2019, 12:39pm UTC](https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651/2 "2019-07-18T12:39:42Z")

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You should be using double quotes for the string, so it would be:  
`doc['kf4'].value + "-" + doc['kf5'].value`

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<div class="post-metadata">

**Author:** ![cheriemilk](https://avatars.discourse-cdn.com/v4/letter/c/c37758/32.png) [@cheriemilk](https://discuss.elastic.co/u/cheriemilk)\
**Post date:** [July 19, 2019, 6:59am UTC](https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651/3 "2019-07-19T06:59:55Z")

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Hi Marius,

double quotes doesn't work as well.  
Finally, doc['kf4.keyword].value + "-" + doc['kf5.keyword'].value works.

Thanks,  
Cherie

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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:** [August 16, 2019, 7:00am UTC](https://discuss.elastic.co/t/resolved-script-is-invalid-for-doc-kf4-value-doc-kf5-value/190651/4 "2019-08-16T07:00:01Z")

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