Like you can see in the linked youtube video (forward to 7:14), he is using an older version of Launch4j and using “Only use private JDK runtimes” in the JRE tab to make sure the .exe file uses the JRE we bundled along with other necessary files. But the latest version I am using (3.5.0) does not have that option.

What is the alternative option for the newer versions of Launch4j?