# UpdateExperimentTemplateStopConditionInput
<a name="API_UpdateExperimentTemplateStopConditionInput"></a>

Specifies a stop condition for an experiment. You can define a stop condition as a CloudWatch alarm.

## Contents
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 ** source **   <a name="fis-Type-UpdateExperimentTemplateStopConditionInput-source"></a>
The source for the stop condition. Specify `aws:cloudwatch:alarm` if the stop condition is defined by a CloudWatch alarm. Specify `none` if there is no stop condition.  
Type: String  
Length Constraints: Maximum length of 64.  
Pattern: `[\S]+`   
Required: Yes

 ** value **   <a name="fis-Type-UpdateExperimentTemplateStopConditionInput-value"></a>
The Amazon Resource Name (ARN) of the CloudWatch alarm.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `[\s\S]+`   
Required: No

## 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/fis-2020-12-01/UpdateExperimentTemplateStopConditionInput) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/fis-2020-12-01/UpdateExperimentTemplateStopConditionInput) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/fis-2020-12-01/UpdateExperimentTemplateStopConditionInput)