# ProbabilisticRuleValueUpdate
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 Update to the indexing rule configuration for probabilistic sampling. 

## Contents
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 ** 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
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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\+\+](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) 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS X-Ray. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query xray` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).