Variable Types

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There are three types of variables supported in Katalon Studio, as below:

Variable Type Description
Private variable A private variable can be referred only within the scope of the test case where it is defined.
Local Variable A public variable can be exposed as the parameter for the test case where it is defined
Global Variable (Execution Profiles) A global variable can be referred anywhere of your project.

Refer to the subsequence sections for how to define a variable of each type.

Private variables

Variables defined in Scripting view of Test Cases are classified as private variables. These variables will only be accessible within the scope of your Groovy class. For example:

// x is defined as a variable of String type
	String x = "Hello";
// y is defined as a variable of int type
    int y = 5;
// The value of the variables are printed to the console 

Local variables

Since version 5.9, Katalon Studio provides Script Mode for Local Variables. The scripting interface allows you to quickly create any variables for the test cases without manually filling out the variable table.

You can manage the list of public variables of your test case by using the Variables tab in your Test Case Editor.

  1. To add variable using grid view, switch to Variables tab of your Test Case. Then click Add. A new row is added to the variable list. Modify the variable details and save the test case once done.

  2. Alternatively, variables can be added using Script Mode. Switch to Variable (Script Mode) tab, Katalon Studio will display a Script Editor with XML format. For example:

<?xml version="1.0" encoding="UTF-8"?>
<Entity xmlns:xsi="" xsi:type="variableEntityWrapper">
      <defaultValue>'John Doe'</defaultValue>
  1. Variables defined in this list can be utilized as parameters for the test case in other configurations. (e.g. input data for keywords in Manual View or params when binding Data for Test Execution)

Global variables

  • Only for version 5.3 and below.
  • Since version 5.4 and above, Global Variables are called Execution Profile. For more details, refer to this documentation.

You can manage the list of global variables in your project by using the Global Variables view.

  1. Expand the Global Variable view. Then click Add

  2. The New variable dialog is displayed. Specify details for the variable then click OK.

  3. The variable will be added to the Global Variable list accordingly.

  4. Global variables can be utilized by any test case across a project. (e.g. input data for keywords in Manual View or params when binding Data for Test Execution)

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