# Populate an input field

Use the action `Charles: Populate input field` workflow action and give it:

* A text value to populate the input with
* A CSS selector to select the input you want to populate
* Please note that Charles will automatically select the first element that matches the selector.

<figure><img src="/files/5wqFKINP4X1QnwZTDdBP" alt=""><figcaption></figcaption></figure>

Learn more about CSS selectors:

* <https://www.w3schools.com/jsref/met_document_queryselector.asp>
* <https://www.w3schools.com/css/css_selectors.asp>
* <https://www.w3schools.com/cssref/css_selectors.php>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cranford-tech.gitbook.io/charles/key-features/populate-an-input-field.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.