This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::Cases::CaseRule HiddenCaseRule
<a name="aws-properties-cases-caserule-hiddencaserule"></a>

A rule that controls field visibility based on conditions. Fields can be shown or hidden dynamically based on values in other fields.

## Syntax
<a name="aws-properties-cases-caserule-hiddencaserule-syntax"></a>

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

### JSON
<a name="aws-properties-cases-caserule-hiddencaserule-syntax.json"></a>

```
{
  "[Conditions](#cfn-cases-caserule-hiddencaserule-conditions)" : [ BooleanCondition, ... ],
  "[DefaultValue](#cfn-cases-caserule-hiddencaserule-defaultvalue)" : Boolean
}
```

### YAML
<a name="aws-properties-cases-caserule-hiddencaserule-syntax.yaml"></a>

```
  [Conditions](#cfn-cases-caserule-hiddencaserule-conditions): 
    - BooleanCondition
  [DefaultValue](#cfn-cases-caserule-hiddencaserule-defaultvalue): Boolean
```

## Properties
<a name="aws-properties-cases-caserule-hiddencaserule-properties"></a>

`Conditions`  <a name="cfn-cases-caserule-hiddencaserule-conditions"></a>
A list of conditions that determine field visibility.  
*Required*: Yes  
*Type*: Array of [BooleanCondition](aws-properties-cases-caserule-booleancondition.md)  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DefaultValue`  <a name="cfn-cases-caserule-hiddencaserule-defaultvalue"></a>
Whether the field is hidden when no conditions match.  
*Required*: Yes  
*Type*: Boolean  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)