# ProbabilisticRuleValueUpdate
<a name="API_ProbabilisticRuleValueUpdate"></a>

 Update to the indexing rule configuration for probabilistic sampling. 

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

 ** DesiredSamplingPercentage **   <a name="xray-Type-ProbabilisticRuleValueUpdate-DesiredSamplingPercentage"></a>
 Configured sampling percentage of traceIds. Note that sampling can be subject to limits to ensure completeness of data.   
Type: Double  
Required: Yes

## See Also
<a name="API_ProbabilisticRuleValueUpdate_SeeAlso"></a>

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/xray-2016-04-12/ProbabilisticRuleValueUpdate) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/xray-2016-04-12/ProbabilisticRuleValueUpdate) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/xray-2016-04-12/ProbabilisticRuleValueUpdate)