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# AWS::DataBrew::Ruleset SubstitutionValue
<a name="aws-properties-databrew-ruleset-substitutionvalue"></a>

A key-value pair to associate an expression's substitution variable names with their values.

## Syntax
<a name="aws-properties-databrew-ruleset-substitutionvalue-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-databrew-ruleset-substitutionvalue-syntax.json"></a>

```
{
  "[Value](#cfn-databrew-ruleset-substitutionvalue-value)" : String,
  "[ValueReference](#cfn-databrew-ruleset-substitutionvalue-valuereference)" : String
}
```

### YAML
<a name="aws-properties-databrew-ruleset-substitutionvalue-syntax.yaml"></a>

```
  [Value](#cfn-databrew-ruleset-substitutionvalue-value): String
  [ValueReference](#cfn-databrew-ruleset-substitutionvalue-valuereference): String
```

## Properties
<a name="aws-properties-databrew-ruleset-substitutionvalue-properties"></a>

`Value`  <a name="cfn-databrew-ruleset-substitutionvalue-value"></a>
Value or column name.  
*Required*: Yes  
*Type*: String  
*Minimum*: `0`  
*Maximum*: `1024`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ValueReference`  <a name="cfn-databrew-ruleset-substitutionvalue-valuereference"></a>
Variable name.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^:[A-Za-z0-9_]+$`  
*Minimum*: `2`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)