How do I use an Array as a spawning system?

Im trying to create a spawning system for a Tower Defence game. I was looking at the following tutorial: youtu.be/wB8mIAHf4E0. At 2:45 they use the Event sheet to look at the array to see the amount of that enemy type to spawn.

This does not seem to work for my game. The Event sheet does not seem to have any reference to the array.

I have also tried looking at the following documentation, but found that this does not work either:

construct.net/en/make-games/manuals/construct-3/plugin-reference/json

Am I missing something, like a setting? If anyone has a better way of doing this, that would be super helpful.

You mean you can't add an Array or JSON object to your project?

Check "Use simplified interface" in program settings and make sure it's disabled.

I can add. When it comes to using the Event sheet, it doesn't seem to know the array exists. I have looked at the documentation and have the JSON and AJAX but still cant make it work.

I used the Debugger, and I can see that information has been loaded into the array.

I set a text box as one of the cells in the Array to see if I could get the value to show. It came back with the value 0, it shouldn't be that. Am I using the wrong expression here?