AddToCart
Adds the specified item to the cart of the current user.
Input
| Name | Type | Required | Description |
| ID | String | True | Unique ID of the item to add to the current cart. |
| Quantity | String | True | Number of the item to add to the cart. Cannot be a negative number. |
Result Set Columns
| Name | Type | Description |
| Success | String | Whether or not the stored procedure was successful. |