# Unsupported script value error in visual
**URL:** https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800
**Category:** Kibana
**Created:** [December 29, 2020, 1:37pm UTC](https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800 "2020-12-29T13:37:27Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Rajesh\_M](https://discuss.elastic.co/u/Rajesh_M)
#### Post date: [December 29, 2020, 1:37pm UTC](https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800/1 "2020-12-29T13:37:27Z")
Hi,
I am using ELK 7.6.2.
In my index, there are two fields, timestamp and duration (duration is in ms). I have created a new field using painless script to find the start time (`timestamp` - `duration`). Below is my scripted field,
```auto
if (doc['duration_ms'].size() != 0) {
return new Date(doc['@timestamp'].value.getMillis()-doc['duration_ms'].value)
}
```
The preview works as expected and able to see the correct data in "Discover" too. But when i create a visual, i get "unsupported script value error".
```auto
{
"took": 152,
"timed_out": false,
"_shards": {
"total": 180,
"successful": 179,
"skipped": 178,
"failed": 1,
"failures": [
{
"shard": 0,
"index": "logstash_access_sshd-2020.12.29",
"node": "3Lg1Rhn9RqWYnSXA68z17A",
"reason": {
"type": "aggregation_execution_exception",
"reason": "Unsupported script value [Tue Dec 29 11:08:30 EET 2020], expected a number, date, or boolean"
}
}
]
},
"hits": {
"total": 0,
"max_score": null,
"hits": []
},
"aggregations": {
"2": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": []
}
}
}
```
is still the custom scripted fields not supported on visuals(mainly i need in data table)?
-Thanks
---
### Author:  [@jbudz](https://discuss.elastic.co/u/jbudz)
#### Post date: [December 29, 2020, 7:36pm UTC](https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800/2 "2020-12-29T19:36:52Z")
Unfortunately it's not supported currently. There's an open issue for it at [https://github.com/elastic/kibana/issues/69121](https://github.com/elastic/kibana/issues/69121) which has more details. Probably the closest workaround is to create a secondary field at index time.
---
### Author:  [@Rajesh\_M](https://discuss.elastic.co/u/Rajesh_M)
#### Post date: [December 29, 2020, 7:51pm UTC](https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800/3 "2020-12-29T19:51:52Z")
Thanks @jbudz. I'll follow the issue on GitHub and try the workaround. 🙂
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 26, 2021, 7:51pm UTC](https://discuss.elastic.co/t/unsupported-script-value-error-in-visual/259800/4 "2021-01-26T19:51:54Z")
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