Hey Denis Seguret thanks for your feedback. Probably I don't was very specific with that. You are right, by saying that 'the solution is to declare your variables at the beginning of your code' I was meant to declare them in the beginning of the scope you are in. Also, for sure is a good practice to always use let instead of var, because when you defined a variable using var is available in the global scope. I think I will update it. I assumed the scope concept was understand it.
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