On the Custom Project Properties tab, you define values of the custom project properties specific to the selected environment.
To edit a value, double-click the Value cell in the table. Use the tab toolbar to work with property values: clear, load, or save to a file, copy or move to another environment:
Working With Multiple Environments
All your custom properties in the list are available to all environments. If you add a property to an environment, it will also appear in other environments of your project, and if you remove a custom property, it will disappear from all environments.
However, ReadyAPI allows to have the same custom property in different environments with different values, so if you change some property value, it may be different in another environment.
Accessing Environment Properties
If the property value is not specified in the environment, ReadyAPI will use an empty value.