# createERC20TransferVoucher

Utility to create a `Voucher` to transfer ERC-20 from the application to a destination address on the base layer.

## Usage

The example below shows how to create a `Voucher` to withdraw 1 CTSI to the `msgSender` of the an input.

```ts twoslash
import { createApp } from "@deroll/app";
import { createERC20TransferVoucher } from "@deroll/wallet";
import { parseUnits } from "viem";

// create app
const app = createApp();

const token = "0x491604c0FDF08347Dd1fa4Ee062a822A5DD06B5D"; // CTSI address
app.addAdvanceHandler(async ({ metadata }) => {
    const value = parseUnits("1", 18);
    const voucher = createERC20TransferVoucher( // [!code focus]
        token, // [!code focus]
        metadata.msgSender, // [!code focus]
        value, // [!code focus]
    ); // [!code focus]
    await app.createVoucher(voucher);
    return "accept";
});
```

## Returns

Type: `Voucher`

## Parameters

Type: `Address`

ERC-20 token address.

Type: `Address`

Destination address.

Type: `bigint`

Amount to transfer.