---
title: isUsed
slug: campaign/docs/isused
docTags: 
createdAt: 2026-07-02T19:01:46.338Z
---

**Type**: boolean

**Parameters**

| Name      | Type   | Value                         |
| --------- | ------ | ----------------------------- |
| sessionId | String | ID of the current session     |
| blockId   | long   | ID of the coupon block        |
| code      | String | The coupon code to be queried |

**Return values**

- true: Coupon code has been converted
- false: Coupon code has not been converted

**Code structure**

```javascript
boolean isUsed(String sessionId, long blockId, String code)
```