# EvaluationFormItemEnablementExpression
<a name="API_EvaluationFormItemEnablementExpression"></a>

An expression that defines a basic building block of conditional enablement.

## Contents
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 ** Comparator **   <a name="connect-Type-EvaluationFormItemEnablementExpression-Comparator"></a>
A comparator to be used against list of values.   
Type: String  
Valid Values: `IN | NOT_IN | ALL_IN | EXACT`   
Required: Yes

 ** Source **   <a name="connect-Type-EvaluationFormItemEnablementExpression-Source"></a>
A source item of enablement expression.  
Type: [EvaluationFormItemEnablementSource](API_EvaluationFormItemEnablementSource.md) object  
Required: Yes

 ** Values **   <a name="connect-Type-EvaluationFormItemEnablementExpression-Values"></a>
A list of values from source item.  
Type: Array of [EvaluationFormItemEnablementSourceValue](API_EvaluationFormItemEnablementSourceValue.md) objects  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/connect-2017-08-08/EvaluationFormItemEnablementExpression) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/connect-2017-08-08/EvaluationFormItemEnablementExpression) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/connect-2017-08-08/EvaluationFormItemEnablementExpression)