Word Blanks hi guys i have been stack here last 30 minutes i need you help to solve it out please

Tell us what’s happening:

Your code so far

function wordBlanks(num, num1, num2, num3) {
  var result = "My" + num2 + "is " + num3 + ". " + "Yesterday he " + num + "very " + num1 + " to get his food.";

  // Your code below this line
  

  // Your code above this line
  return result;
}

var greeting = function() {
  return 'hello poop';
};

// Change the words here to test your function
wordBlanks(null, greeting , 1, true);

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36.

Link to the challenge:

Thanks for your Help i fugure this stupid mistake out