I just started using Jmeter and don't know how to make a variable. This is the HTTP body request and I would like to change the project name each time I perform load testing. body data

I tried using CSV config but it didn't work.

2 Answers 2


If you have a CSV file which looks like

project x
project y
project z
  1. Add a CSV Data Set Config and:

    • provide full or relative path to the CSV file, i.e. projects.csv
    • desired variable name, i.e. project

    enter image description here

  2. Once done you will be able to refer the value from the CSV as ${project} where required, i.e. in the Body Data tab of the HTTP Request sampler

    enter image description here

  3. When you run your test the ${project} JMeter Variable placeholder will be replaced by the next line from the CSV file on each iteration of each virtual user:

    enter image description here

More information: JMeter Parameterization: The Complete Guide


You can parametrize the body in JMeter by using the following steps:

1 Add a "HTTP Request" sampler to your test plan

2 In the Body Data section of the HTTP Request sampler, use variables to define the content of the request body. For example, if you want to send a JSON payload, you can write it like this:


3 To define the values of the variables, you can use a "CSV Data Set Config" element.

4 In the CSV Data Set Config element, specify the file name and other details of the CSV file containing the data.

5 Reference the variables in the HTTP Request sampler using the syntax ${variable_name}

For more detailed information, you can refer to the following resources:

  1. JMeter User Manual - https://jmeter.apache.org/usermanual/index.html
  2. JMeter - How to Use CSV Data Set Config - https://jmeter.apache.org/usermanual/component_reference.html#CSV_Data_Set_Config
  3. How to Parameterize Requests in JMeter - https://www.blazemeter.com/blog/how-to-parameterize-requests-in-jmeter/

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