I need help, Declare JavaScript Variables

I have failed for 3 days to do this challenge despite doing it correctly , it onlys says testing challenge and doesn’t show whether its wrong or right .

My answer is
var myName=“Mercy”;

And can’t be approved to another challenge
Pliz give me the correct answer am tired.

Tell us what’s happening:

Your code so far
var myName="Mercy";
Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Linux; Android 6.0; Hisense U989 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.83 Mobile Safari/537.36.

Link to the challenge:

Don’t assign it any value yet. It’s just var myName;

Okey so how exactly should I write?
Please give me an example

The code I posted should work.

Thanx ,am sorted. It worked