**Tell us what’s happening:**

Describe your issue in detail here.

```
**Your code so far**
```

```
function freezeObj() {
const MATH_CONSTANTS = {
PI: 3.14
};
Object.freeze(freezeObj);
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 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36`

**Challenge:** Prevent Object Mutation

**Link to the challenge:**

Read the instructions very carefully:

" You need to freeze the `MATH_CONSTANTS`

object"

What are you trying to freeze in your code?

`Object.freeze(freezeObj);`

1 Like

Now it tells me that: `ReferenceError: Math_CONSTANTS is not defined`

Done, finally … That’s the good code:

```
function freezeObj() {
const MATH_CONSTANTS = {
PI: 3.14
};
Object.freeze(MATH_CONSTANTS);
try {
MATH_CONSTANTS.PI = 99;
} catch(ex) {
console.log(ex);
}
return MATH_CONSTANTS.PI;
}
const PI = freezeObj();
```

But still thank you for help!

system
closed
#6
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