pm-finamis opened a new issue, #6066: URL: https://github.com/apache/jmeter/issues/6066
### Use case UDV now only supports replacing the whole value match for ${variableName}. 1) Sometimes the parameter values are not unique enough E.g. in request body TENANT_ID|1|STYLE_ID|1 a value match "1" is not unique enough to identify tenantId variable and 2 replacements would be done. TENANT_ID|${tenantId}|STYLE_ID|${tenantId} 2) or are not needed at all to place a new variable into test. E.g. in request body TENANT_ID|1|STYLE_ID|1 match value of "1" is not needed and better way would be looking for parameter name "TENANT_ID". ### Possible solution Support regex group matching and replacing E.g. in request body TENANT_ID|1|STYLE_ID|1 for pattern: (?<prefix>\bTENANT_ID\|)(?<value>[0-9]+?)(?<suffix>\|\b) groups prefix and suffix would be copied without change, value group would be replaced by the variable ${tenantId}. result would be TENANT_ID|${tenantId}|STYLE_ID|1 Pattern is able to identify variables without even knowing the value of the parameter in request body, it matches any number. Although a static value could be used (?<prefix>\bTENANT_ID\|)(?<value>123)(?<suffix>\|\b) too. Please see the attached patch [ReplaceFunctionsWithStrings.patch](https://github.com/apache/jmeter/files/12396493/ReplaceFunctionsWithStrings.patch) Only java regex are implemented, not oro. Method transformValueWithJavaRegex is made protected to be used in unit tests. UDV values that contain regex for group replace would be identified by '*' at their start for backward compatibility.  ### Possible workarounds _No response_ ### JMeter Version 5.6.2 ### Java Version 17 ### OS Version _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@jmeter.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org