Pls help me to understand

Tell us what’s happening:
Describe your issue in detail here.
i dont understand how this"console.log(bicycle.gear)"code is returning 3 as the same as this code "bicycle.setGear(3);"cause i expected it to return 2 not 3

  **Your code so far**
// Only change code below this line
const bicycle = {
gear: 2,
setGear(newGear) {
  this.gear = newGear;
}
};
// Only change code above this line
bicycle.setGear(3);
console.log(bicycle.gear);
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Challenge: Write Concise Declarative Functions with ES6

Link to the challenge:

this one is a method on the bycicle object that changes the gear property

so bycicle.gear will become equal to the argument passed in to bicycle.setGear()