The ‘lastNameLenght’ is initialized with the value of zero in the first code line.
Now, you have to assign the length of the ‘lastName’ variable to the ‘lastNameLength’ (after that the value will not be zero anymore). So apply the .length method on the ‘lastName’ variable in the last code line:
variableLenght = variable.method; ...this is guidance
Add the console.log(lastNameLength) to see the length of the string in question.