# Variable

> Variable is the definition of a variable that is used for composition. A variable is defined as a named expression.

---

LLMS index: [llms.txt](/llms.txt)

---

<!--
The file is auto-generated from the Go source code of the component using a generic
[generator](https://github.com/kubernetes-sigs/reference-docs/). To learn how
to generate the reference documentation, please read
[Contributing to the reference documentation](/docs/contribute/generate-ref-docs/).
To update the reference content, please follow the
[Contributing upstream](/docs/contribute/generate-ref-docs/contribute-upstream/)
guide. You can file document formatting bugs against the
[reference-docs](https://github.com/kubernetes-sigs/reference-docs/) project.
-->

`apiVersion: admissionregistration.k8s.io/v1`

`import "k8s.io/api/admissionregistration/v1"`


## Variable {#Variable}

Variable is the definition of a variable that is used for composition. A variable is defined as a named expression.

<hr>

<table>
  <thead><tr><th>Field</th><th>Description</th></tr></thead>
  <tbody>
    <tr>
      <td><code>expression</code>&nbsp;<strong>*</strong><br/><em>string</em></td>
      <td>expression is the expression that will be evaluated as the value of the variable. The CEL expression has access to the same identifiers as the CEL expressions in Validation.</td>
    </tr>
    <tr>
      <td><code>name</code>&nbsp;<strong>*</strong><br/><em>string</em></td>
      <td>name is the name of the variable. The name must be a valid CEL identifier and unique among all variables. The variable can be accessed in other expressions through `variables` For example, if name is "foo", the variable will be available as `variables.foo`</td>
    </tr>
  </tbody>
</table>