Can't seem to get the code to read correctly

Tell us what’s happening:
Can’t seem to get the code to read correctly.

Your code so far

// Setup
var a;
var b = 2;

// Only change code below this line
MyVar = 7;
myNum = myVar;
myVar = a; 
a = b; 

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36.

Link to the challenge:

you haven’t assigned 7 to the variable a
also if you want to make b have the same content as a it should be b=a, not vice versa