# IFrax

## Methods

### exchangeOldForCanonical

```solidity
function exchangeOldForCanonical(address bridge_token_address, uint256 token_amount) external nonpayable returns (uint256)
```

#### Parameters

| Name                   | Type    | Description |
| ---------------------- | ------- | ----------- |
| bridge\_token\_address | address | undefined   |
| token\_amount          | uint256 | undefined   |

#### Returns

| Name | Type    | Description |
| ---- | ------- | ----------- |
| \_0  | uint256 | undefined   |