> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gleap.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Prefill the widget form

In some situations you might want to prefill some fields for the user. This can be achieved by the following method.

```java theme={null}
JSONObject prefill = new JSONObject();
try{
    prefill.put("description", "Prefill the description with this.");
}catch (Exception ex){
    ex.getStackTrace();
}

PrefillHelper.getInstancen().setPrefillData(prefill);
```

You need to pass a key value pair to the `setPrefillData`. The key is the form identifier, which can be found under the 'Advanced' section of a question. (see screenshot for an example)

<img src="https://mintcdn.com/gleap-1d346ffa/b8_EVsZHbtxdB2pN/images/prefill.png?fit=max&auto=format&n=b8_EVsZHbtxdB2pN&q=85&s=3be23cbaaafb99eb81452eb32516bfcd" alt="Form identifier" width="2292" height="1792" data-path="images/prefill.png" />