Am I doing something wrong?

**Yourfunction freezeObj() {

‘use strict’;

const MATH_CONSTANTS = {

PI: 3.14

};

// Only change code below this line

Object.freeze(MATH_CONSTANTS);

// Only change code above this line

try {

MATH_CONSTANTS.PI = 99;

} catch(ex) {

console.log(ex);

}

return MATH_CONSTANTS.PI;

}

const PI = freezeObj(); code so far**

```
function freezeObj() {
'use strict';
const MATH_CONSTANTS = {
PI: 3.14
};
// Only change code below this line
Object.freeze(MATH_CONSTANTS);
// Only change code above this line
try {
MATH_CONSTANTS.PI = 99;
} catch(ex) {
console.log(ex);
}
return MATH_CONSTANTS.PI;
}
const PI = freezeObj();
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36`

.

**Challenge:** Prevent Object Mutation

**Link to the challenge:**