Understanding Case Sensitivity in Variables legionista

Tell us what’s happening:
Please help me and explain for me what i should do, because i am stuck and cant figure out this problem , thank you everyone

Your code so far

// Declarations
var StUdLyCapVaR;
var properCamelCase;
var TitleCaseOver;

// Assignments
PRoperCAmelCAse = "A String";
tITLEcASEoVER = 9000;

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Link to the challenge:

Modify the existing declarations and assignments so their names use camelCase.
Do not create any new variables.