# Update return 500 and npe
**URL:** https://discuss.elastic.co/t/update-return-500-and-npe/19029
**Category:** Elasticsearch
**Created:** [August 1, 2014, 1:40pm UTC](https://discuss.elastic.co/t/update-return-500-and-npe/19029 "2014-08-01T13:40:44Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@fancyerii](https://discuss.elastic.co/u/fancyerii)
#### Post date: [August 1, 2014, 1:40pm UTC](https://discuss.elastic.co/t/update-return-500-and-npe/19029/1 "2014-08-01T13:40:44Z")
I am using 0.90.13.
$ curl -XGET [http://localhost:9200/blog/article/1?pretty](http://localhost:9200/blog/article/1?pretty)
{
"\_index" : "blog",
"\_type" : "article",
"\_id" : "1",
"\_version" : 3,
"exists" : true, "\_source" : {"title":"New version of Elasticsearch
released!","content":"new
content","tags":["announce","elasticsearch","release"],"counter":1}
}
curl -XPOST [http://localhost:9200/blog/article/1/\_update](http://localhost:9200/blog/article/1/_update) -d
'"script":"ctx.\_source.counter += 2"'
{"error":"NullPointerException[null]","status":500}
what's wrong?
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---
### Author:  [@fancyerii](https://discuss.elastic.co/u/fancyerii)
#### Post date: [August 2, 2014, 1:43am UTC](https://discuss.elastic.co/t/update-return-500-and-npe/19029/2 "2014-08-02T01:43:45Z")
I found the problem, it should be json object
curl -XPOST [http://localhost:9200/blog/article/1/\_update](http://localhost:9200/blog/article/1/_update) -d '{"script":"ctx.\_source.counter
+= 2"}'
On Friday, August 1, 2014 9:40:44 PM UTC+8, [fanc...@gmail.com](mailto:fanc...@gmail.com) wrote:
> I am using 0.90.13.
>
> $ curl -XGET [http://localhost:9200/blog/article/1?pretty](http://localhost:9200/blog/article/1?pretty)
>
> {
>
> "\_index" : "blog",
>
> "\_type" : "article",
>
> "\_id" : "1",
>
> "\_version" : 3,
>
> "exists" : true, "\_source" : {"title":"New version of Elasticsearch
> released!","content":"new
> content","tags":["announce","elasticsearch","release"],"counter":1}
>
> }
>
> curl -XPOST [http://localhost:9200/blog/article/1/\_update](http://localhost:9200/blog/article/1/_update) -d
> '"script":"ctx.\_source.counter += 2"'
>
> {"error":"NullPointerException[null]","status":500}
>
> what's wrong?
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---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:11am UTC](https://discuss.elastic.co/t/update-return-500-and-npe/19029/3 "2017-07-06T01:11:29Z")