# Place upgrade orders with InLine Cart

## Overview

Upgrades a current subscription using the inline checkout.

{% hint style="info" %}
The Checkout form will be prefilled with subscription's billing data.
{% endhint %}

## Use case <a href="#use-case" id="use-case"></a>

1. Add an HTML link or button in your page like the one below.
2. Create a JavaScript click handler to execute the Inline Client desired methods.
3. Use the `TwoCoInlineCart.products.add({code, quantity, options})` method to prepare your catalog product.
4. Set the license code as the subscription reference on the cart `TwoCoInlineCart.cart.setSubscription('IMKNNVEY13')`.<br>

   <div data-gb-custom-block data-tag="hint" data-style="info" class="hint hint-info"><p>Make sure your parent subscription has upgrades available in Control Panel, for your current product.</p></div>
5. Set the upgrade flag on the cart `TwoCoInlineCart.cart.setUpgrade(true)`.
6. Use the `TwoCoInlineCart.cart.checkout()` method to show the cart on your page.

## Sample request <a href="#sample-request" id="sample-request"></a>

### HTML <a href="#html" id="html"></a>

```html
<a href="#" class="btn btn-success" id="buy-button">Buy now!</a>
```

### Javascript <a href="#javascript" id="javascript"></a>

```javascript
window.document.getElementById('buy-button').addEventListener('click', function() {
  TwoCoInlineCart.products.add({
    code: "74B8E17CC0"
  });
  TwoCoInlineCart.cart.setSubscription('IMKNNVEY13');
  TwoCoInlineCart.billing.setEmail('john.doe@company.com');
  TwoCoInlineCart.cart.setUpgrade(true);
  TwoCoInlineCart.cart.checkout();
});
```


---

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```
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```

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