# Strange behavior while trying to access the score of a document within a script
**URL:** https://discuss.elastic.co/t/strange-behavior-while-trying-to-access-the-score-of-a-document-within-a-script/79918
**Category:** Elasticsearch
**Created:** [March 24, 2017, 3:47pm UTC](https://discuss.elastic.co/t/strange-behavior-while-trying-to-access-the-score-of-a-document-within-a-script/79918 "2017-03-24T15:47:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Tobias\_Sturzenegger](https://discuss.elastic.co/u/Tobias_Sturzenegger)
#### Post date: [March 24, 2017, 3:47pm UTC](https://discuss.elastic.co/t/strange-behavior-while-trying-to-access-the-score-of-a-document-within-a-script/79918/1 "2017-03-24T15:47:08Z")
Hi
I encountered a strange behavior while trying to access the score of a document within a script.
My elasticsearch version:
"version" : {
"number" : "5.2.2",
"build\_hash" : "f9d9b74",
"build\_date" : "2017-02-24T17:26:45.835Z",
"build\_snapshot" : false,
"lucene\_version" : "6.4.1"
I tried to follow the guideline from: [https://www.elastic.co/guide/en/elasticsearch/reference/5.2/modules-scripting-fields.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.2/modules-scripting-fields.html)
I put following commands into my system:
curl -XPUT [http://localhost:9200/my\_index/my\_type/1](http://localhost:9200/my_index/my_type/1) -d'
{
"text": "quick brown fox",
"popularity": 1
}'
curl [http://localhost:9200/my\_index/\_search](http://localhost:9200/my_index/_search) -d'
{
"query": {
"function\_score": {
"query": {
"match": {
"text": "quick brown fox"
}
},
"script\_score": {
"script": {
"lang": "expression",
"inline": "\_score \* doc['popularity']"
}
}
}
}
}'
I got the following error message:
{"error":{"root\_cause":[{"type":"script\_exception","reason":"compile error","script\_stack":["doc[my\_field] \* multiplier"," ^---- HERE"],"script":"doc[my\_field] \* multiplier","lang":"expression"}],"type":"search\_phase\_execution\_exception","reason":"all shards failed","phase":"query","grouped":true,"failed\_shards":[{"shard":0,"index":"my\_index","node":"FtR3JCuSR9uGVUoqRu6cuw","reason":{"type":"script\_exception","reason":"compile error","caused\_by":{"type":"parse\_exception","reason":"unexpected character '[' on line (1) position (3)","caused\_by":{"type":"lexer\_no\_viable\_alt\_exception","reason":null}},"script\_stack":["doc[my\_field] \* multiplier"," ^---- HERE"],"script":"doc[my\_field] \* multiplier","lang":"expression"}}],"caused\_by":{"type":"script\_exception","reason":"compile error","caused\_by":{"type":"parse\_exception","reason":"unexpected character '[' on line (1) position (3)","caused\_by":{"type":"lexer\_no\_viable\_alt\_exception","reason":null}},"script\_stack":["doc[my\_field] \* multiplier"," ^---- HERE"],"script":"doc[my\_field] \* multiplier","lang":"expression"}},"status":500}
Can someone help?
Kind regards
---
### Author:  [@Tobias\_Sturzenegger](https://discuss.elastic.co/u/Tobias_Sturzenegger)
#### Post date: [March 27, 2017, 10:43am UTC](https://discuss.elastic.co/t/strange-behavior-while-trying-to-access-the-score-of-a-document-within-a-script/79918/2 "2017-03-27T10:43:41Z")
If someone else runs into that problem. It was a unicode problem.
Instead of:
doc['popularity']
use
doc[\u0027popularity\u0027]
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 24, 2017, 10:43am UTC](https://discuss.elastic.co/t/strange-behavior-while-trying-to-access-the-score-of-a-document-within-a-script/79918/3 "2017-04-24T10:43:42Z")
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