# RuleBooleanExpression
<a name="API_RuleBooleanExpression"></a>

A boolean expression to be used in a rule condition.

## Contents
<a name="API_RuleBooleanExpression_Contents"></a>

 ** Evaluate **   <a name="sesmailmanager-Type-RuleBooleanExpression-Evaluate"></a>
The operand on which to perform a boolean condition operation.  
Type: [RuleBooleanToEvaluate](API_RuleBooleanToEvaluate.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: Yes

 ** Operator **   <a name="sesmailmanager-Type-RuleBooleanExpression-Operator"></a>
The matching operator for a boolean condition expression.  
Type: String  
Valid Values: `IS_TRUE | IS_FALSE`   
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/mailmanager-2023-10-17/RuleBooleanExpression) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mailmanager-2023-10-17/RuleBooleanExpression) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mailmanager-2023-10-17/RuleBooleanExpression)