1. Launch RegEdit on the machine where Statistica and the two versions of R are installed.
2. Navigate to HKEY_LOCAL_MACHINE>>SOFTWARE>>R-core>>R
3. Change the Current Version to the version of R that you would like for Statistica to integrate with and update the Install Path to the version of R that you would like Statistica to integrate with (Copy from the respective R subfolders if required) :
4. Launch Statistica post making this change - If R integration is already enabled, Statistica will pick on the above change and display the integration with R 3.6.3 (or older version of R of choice) . Click on Tools >>R Integration to verify
5. Optionally, navigate to Open>>Open Examples>>R >>Standalone and Run Macro to verify integration with R.
DISCLAIMER: TIBCO Software,Inc does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to
Microsoft Article ID 256986 "Description of the Microsoft Windows registry" at Microsoft Support.