# Fill null values

The fill null values step allows to fill null values in specified columns with a value of your choice.

### Step parameters

* `Replace null values in..` **column(array)\***: the columns where the null values will be filled with another value
* `With` **value\***: the value that will replace null values

### Example

**Input**

<figure><img src="/files/ceymbEfViNE4qyyNG5sV" alt=""><figcaption><p>Column header - fill null values input</p></figcaption></figure>

**Configuration**

```json
{
    "columns": ["Value", "KPI"],
    "value": "NaN"
}
```

**Output**

<figure><img src="/files/nJhHJtuCHQg4LDWY26sJ" alt=""><figcaption><p>Column header - fill null values output</p></figcaption></figure>


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