Understanding Case Sensitivity in Variables cant understand AT All

Tell us what’s happening:

Your code so far

// Declarations
var Studlycapvar;
var properCamelCase;
var camelCase;

// Assignments
 var studlycapvar = 10;
 var properCamelCase = "A String";
 var CamelCase= 9000;

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Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36.

Link to the challenge:

Challenge solution will be like:

// Declarations
var studlyCapVar;
var properCamelCase;
var titleCaseOver;

// Assignments
studlyCapVar = 10;
properCamelCase = "A String";
titleCaseOver = 9000;

U can understand variable name concept as:
for variable standard in JS: ur name will be written like shivShivam and mine will be like sachinLamba etc.

I put this in and it should work but it does not

// Declarations
var studlyCapVar;
var properCamelCase;
var titleCaseOver;

// Assignments
studlyCapVar = 10;
peoperCamelCase = “A String”;
titleCaseOver = 9000;

I wrote exaclty the same code as you did but it does not work
I cant see the difference, is there someting wrong with program?

check your spelling “studly” not “study”