Sugarcube 2.7.0 error - Looking for help with JavaScript macro creation.

Hello Twine Community,

I've been following the video tutorial series by Vegetarian Zombie. Most recently, I used his Using Macros video to display three player stats at the top of each slide where the macro was placed. When I add the macro to the slide and play, I receive two errors:

1. a popup error that states "Error [tw-user-script-0]: Unexpected token <."
2. An error in the debug mode of Twine that states "Error: macro <<stats>> does not exist."

Here's the code I used to create the script, per the YouTube video series.

macros.stats = {
	handler : function(place, macroName, params, parser) {
		var player = params[0,1,2];
		new Wikifier(place, "Experience: " + player.experience);
			if (player.experience >= 1 && < 20) {
				new Wikifier(place, "Rank: What is TEAMS?");
	}
			if (player.experience >= 20 && < 40) {
				new Wikifier(place, "Rank: Novice");
	}
	}
}

I'm going to start learning JavaScript on Code Academy, because I think it would help me recognize what's wrong here, but any advise in the meantime is much appreciated!