How to save response in a variable in jmeter

Question

I am performing load testing on my server using jmeter. In one of my post requests, I receive a unique id in the response. I need to send this id as a parameter in the following

Answer 1

You can use JMeter's Post-Processor Regular Expression Extractor to extract the required value from response. Just Add this under the sampler whose response will contain the required value.

In Reg expression extractor, you will define the variable name (referenceName), RegularExpression, template etc. Later you can use the value in this variable. To learn how to use Reg expression extractor you can refer to following tutorial.

https://docs.blazemeter.com/customer/portal/articles/1743642-using-regex-regular-expression-extractor-with-jmeter