Custom Product + Price in Add to Cart

Good day everyone, pls I have created a product and connected it to add to cart button but I need to set option for a custom price. Pls how can I implement custom price to this addtocart code e.g. if price of connected product id $5 but I want to set a custom price of $7 without changing the connected product price at all. Pls help

// Start with clean slate when page loads.
$w.onReady( function () {
$w(‘#addToCartButton’).onClick((event) => { cart.addProducts([{
“productId”: productId,
“quantity”: 1,
“options”: { choices: selectedOptions }
}]) }) });