# RegexMatchSetUpdate
<a name="API_wafRegional_RegexMatchSetUpdate"></a>

**Note**  
 Amazon WAF Classic support will end on September 30, 2025.   
This is ** Amazon WAF Classic** documentation. For more information, see [Amazon WAF Classic](https://docs.amazonaws.cn/waf/latest/developerguide/classic-waf-chapter.html) in the developer guide.  
 **For the latest version of Amazon WAF **, use the Amazon WAFV2 API and see the [Amazon WAF Developer Guide](https://docs.amazonaws.cn/waf/latest/developerguide/waf-chapter.html). With the latest version, Amazon WAF has a single set of endpoints for regional and global use. 

In an [UpdateRegexMatchSet](API_wafRegional_UpdateRegexMatchSet.md) request, `RegexMatchSetUpdate` specifies whether to insert or delete a [RegexMatchTuple](API_wafRegional_RegexMatchTuple.md) and includes the settings for the `RegexMatchTuple`.

## Contents
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 ** Action **   <a name="WAF-Type-wafRegional_RegexMatchSetUpdate-Action"></a>
Specifies whether to insert or delete a [RegexMatchTuple](API_wafRegional_RegexMatchTuple.md).  
Type: String  
Valid Values: `INSERT | DELETE`   
Required: Yes

 ** RegexMatchTuple **   <a name="WAF-Type-wafRegional_RegexMatchSetUpdate-RegexMatchTuple"></a>
Information about the part of a web request that you want Amazon WAF to inspect and the identifier of the regular expression (regex) pattern that you want Amazon WAF to search for. If you specify `DELETE` for the value of `Action`, the `RegexMatchTuple` values must exactly match the values in the `RegexMatchTuple` that you want to delete from the `RegexMatchSet`.  
Type: [RegexMatchTuple](API_wafRegional_RegexMatchTuple.md) object  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/waf-regional-2016-11-28/RegexMatchSetUpdate) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/waf-regional-2016-11-28/RegexMatchSetUpdate) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/waf-regional-2016-11-28/RegexMatchSetUpdate)