# Add a physical dynamic product with dynamic shipping, dynamic taxes, and dynamic coupon

## Overview

Use the **order promotions** object to add a physical dynamic product with dynamic shipping, dynamic taxes, and dynamic coupon (for the PSP business model).

## Use case

1. Add an HTML link or button to your page like the one below.
2. Create a JavaScript click handler to execute the InLine Client desired methods.
3. Use the TwoCoInlineCart.setup.setMode('DYNAMIC') method in order to let the cart know you are using dynamic instead of catalog products.
4. Use the TwoCoInlineCart.cart.setCurrency(currency-code) method to set the currency.
5. Add your product to the cart by calling the TwoCoInlineCart.products.add({name, quantity, price, options}) method.
6. You can see below a signature token request payload for this example. A success response contains a JSON with the property “signature“ which needs to be used at the next step to set the signature using the TwoCoInlineCart method.<br>

   ```javascript
   {
       "merchant": "250535979326",
       "dynamic": "1",
       "currency": "USD",
       "products": [
           {
               "name"    : "A test physical product",
               "quantity": 1,
               "price"   : 20,
               "type"    : 'physical'
           },
           {
               "name"    : "A test shipping",
               "quantity": 1,
               "price"   : 7,
               "type"    : 'shipping'
           },
           {
               "name"    : "A test tax",
               "quantity": 1,
               "price"   : 10,
               "type"    : 'tax'
           },
           {
               "name"    : "A test promotion",
               "quantity": 1,
               "price"   : 5,
               "type"    : 'coupon'
           }
       ]
   }
   ```
7. Use the TwoCoInlineCart.cart.setSignature('718e810fee34be2bf4b9d4582323aa37580c4011ef694116cca5b0bb7badd2f1') method to set the signature. It is important that you employ TwoCoInlineCart.cart.removeAll() just before the TwoCoInlineCart.products.addMany(products) or TwoCoInlineCart.products.add(product) methods to remove previous products as the signature is based on the products' definition.
8. Use the TwoCoInlineCart.cart.checkout() method to show the cart on your page.

## Sample request

### HTML

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

### JavaScript

```javascript
window.document.getElementById('buy-button').addEventListener('click', function() {
  TwoCoInlineCart.setup.setMode('DYNAMIC');
  TwoCoInlineCart.cart.setCurrency('USD');

  TwoCoInlineCart.products.removeAll();
  TwoCoInlineCart.products.add({
    name: 'A test physical product',
    quantity: 1,
    price: 20,
    type: 'physical'
  });
  TwoCoInlineCart.products.add({
    name: 'A test shipping',
    quantity: 1,
    price: 7,
    type: 'shipping'
  });
  TwoCoInlineCart.products.add({
    name: 'A test tax',
    quantity: 1,
    price: 10,
    type: 'tax'
  });
  TwoCoInlineCart.products.add({
    name: 'A test promotion',
    quantity: 1,
    price: 5,
    type: 'coupon'
  });

  TwoCoInlineCart.cart.setSignature('1563b14f92bfe6bf645a227291120e1a9bbb87bcdf02c410b4522f5d8291fd34');
  TwoCoInlineCart.cart.checkout();
});
```

## Demo

After adding a physical dynamic product with dynamic shipping, dynamic taxes, and dynamic coupon using the above method, your cart should look like this:

{% embed url="<https://codepen.io/2checkout-documentation/pen/oNBGWxy>" %}


---

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