Declare String Variables help me please

Tell us what’s happening:

Help how do you do this I have tried 50 times and I cant get anywhere what do you do?
Your code so far

// Example


// Only change code below this line

var firstName = "Pie";
var lastName = "Posterpo";

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Link to the challenge:
https://www.freecodecamp.org/challenges/declare-string-variables

Ok so I just forgot to add my in front of it got it