Use Prototype Properties to Reduce Duplicate Code- not passing tests

Tell us what’s happening:

Not sure why this is not passing the tests.

Your code so far


function Dog(name) {
  this.name = name;
}

Dog.prototype.numlegs=4;

// Add your code above this line
let beagle = new Dog("Snoopy");

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/object-oriented-programming/use-prototype-properties-to-reduce-duplicate-code

numLegs, with uppercase L.