Using Java Bridge to Include Java classes to Scripts

Hello,

I am creating some test code to carry out a feasibility check to see whether TestComplete can incorporate Java classes to current JS code. I have been following this guide: https://support.smartbear.com/testcomplete/docs/testing-with/advanced/using-external-functions/calling-from-java-classes.html and have seen many people have success with this. However, I have created some dummy data, a simple Java calculator program to call in TestComplete with no success. I am not sure why I am having issues with making the auto-completion window appear when I type JavaClasses. Also, when running the code I get an error reading, 'Cannot read property of undefined'. I have provided some screenshots of how I am using the Java Bridge to call the jar and adding the classes as well as the error message I get. Any help or guidance on this would be greatly appreciated.