# Cannot apply multiply \[\*\] to types \[java.lang.Number\] and \[java.lang.Number\]

**URL:** <https://discuss.elastic.co/t/cannot-apply-multiply-to-types-java-lang-number-and-java-lang-number/213333>\
**Category:** Elasticsearch\
**Created:** [December 30, 2019, 11:06am UTC](https://discuss.elastic.co/t/cannot-apply-multiply-to-types-java-lang-number-and-java-lang-number/213333 "2019-12-30T11:06:22Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![sidgate](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sidgate/32/47498_2.png) [@sidgate](https://discuss.elastic.co/u/sidgate)\
**Post date:** [December 30, 2019, 11:06am UTC](https://discuss.elastic.co/t/cannot-apply-multiply-to-types-java-lang-number-and-java-lang-number/213333/1 "2019-12-30T11:06:22Z")

</div>

I am migrating from Elasticsearch version 5.2.1 to latest 7.5.1. My query had special sub-aggregation where I used to multiple score

```
"aggregations": {
                    "max_score": {
                        "sum": {
                            "script": {
                                "source": "_score * _score",
                                "lang": "painless"
                            }
                        }
                    }
                }

```

This used to work on 5.2.1 but now getting following error:

```
"reason": {
                "type": "script_exception",
                "reason": "compile error",
                "script_stack": [
                    "_score * _score",
                    "^---- HERE"
                ],
                "script": "_score * _score",
                "lang": "painless",
                "caused_by": {
                    "type": "class_cast_exception",
                    "reason": "Cannot apply multiply [*] to types [java.lang.Number] and [java.lang.Number]."
                }
            }

```

How to fix this issue?

---

<div class="post-metadata">

**Author:** ![sidgate](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sidgate/32/47498_2.png) [@sidgate](https://discuss.elastic.co/u/sidgate)\
**Post date:** [December 30, 2019, 12:08pm UTC](https://discuss.elastic.co/t/cannot-apply-multiply-to-types-java-lang-number-and-java-lang-number/213333/2 "2019-12-30T12:08:23Z")

</div>

> [@sidgate](#):
>
> "script": "\_score \* \_score",

```
 "script": "_score.floatValue() * _score.floatValue()",

```

seems to be working. Is this the right way?

---

<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:** [January 27, 2020, 12:08pm UTC](https://discuss.elastic.co/t/cannot-apply-multiply-to-types-java-lang-number-and-java-lang-number/213333/3 "2020-01-27T12:08:29Z")

</div>

Closed on January 27, 2020, 12:08pm UTC

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.