When setting the env vars in the Project Properties/MF Cobol/RT Config page as shown, a .gcf file will be created with the values in it.
This file is read by the run-time system and contains the values you have set.
This file is created when the run launch configuration is created (usually when you first run the program).
1. Use the environment settings within the launch configuration directly – these will be up to date and active. (see screenshot below)
2. Use a new launch configuration (delete the old one) and when created, it will use the contents of the .gcf file from the project properties.
3. Within an existing launch configuration, on the General Tab change the Cobol Project to another one (via the browse... button) and you will be asked if you want to reload the Runtime Configuration from the current project. Say No, and switch back to the project you want and then say Yes to this dialog when it appears again. This will reload the settings into the launch configuration.