# How to Set a Fixed Currency？

By setting a fixed currency, the cash register will accept payments in the currency specified by the interface.

* **In the API application list, select the API application you want to set, click "Operate", then click "Edit".**

<figure><img src="/files/u37nfXLPTVtDkXoFC3Q0" alt=""><figcaption></figcaption></figure>

* **Tap the "Fixed Currency" button, then click "Submit".**

<figure><img src="/files/ZJBaxDzO9CVWTMOMHiML" alt=""><figcaption></figcaption></figure>

After successful setup, the checkout display page appears as follows:

<figure><img src="/files/yUyWiV9v5rQITGKHmTpZ" alt=""><figcaption></figcaption></figure>


---

# 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://doc.tokenpay.me/tutorials/how-to-set-a-fixed-currency.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.
