﻿---
title: Use parameters in your script
description: The first time Elasticsearch sees a new script, it compiles the script and stores the compiled version in a cache. Compilation can be a heavy process...
url: https://www.elastic.co/elastic/docs-builder/docs/2964/explore-analyze/scripting/modules-scripting-use-parameters
products:
  - Elasticsearch
applies_to:
  - Elastic Cloud Serverless: Generally available
  - Elastic Stack: Generally available
---

# Use parameters in your script
The first time Elasticsearch sees a new script, it compiles the script and stores the compiled version in a cache. Compilation can be a heavy process. Rather than hard-coding values in your script, pass them as named `params` instead.
For example, in the previous script, we could have just hard coded values and written a script that is seemingly less complex. We could just retrieve the first value for `my_field` and then multiply it by `2`:
```java
"source": "return doc['my_field'].value * 2"
```

Though it works, this solution is pretty inflexible. We have to modify the script source to change the multiplier, and Elasticsearch has to recompile the script every time that the multiplier changes.
Instead of hard-coding values, use named `params` to make scripts flexible, and also reduce compilation time when the script runs. You can now make changes to the `multiplier` parameter without Elasticsearch recompiling the script.
```java
"source": "doc['my_field'].value * params['multiplier']",
"params": {
  "multiplier": 2
}
```

You can compile up to 150 scripts per 5 minutes by default. For ingest contexts, the default script compilation rate is unlimited.
```js
script.context.field.max_compilations_rate=100/10m
```

<important>
  If you compile too many unique scripts within a short time, Elasticsearch rejects the new dynamic scripts with a `circuit_breaking_exception` error.
</important>