Не понимаю вопроса

Tell us what’s happening:
Describe your issue in detail here.
я понимаю что должно быть по итогу a=b;
но выдает ошибку в чем дело?

Your code so far

// Setup
var a;
a = 7;
var b;

// Only change code below this line

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.141 YaBrowser/ Yowser/2.5 Safari/537.36

Challenge: Assigning the Value of One Variable to Another

Link to the challenge:

It doesn’t look like you have tried anything yet. You need to take the value stored in a and put it in b.