Variable Payment

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1

I would like to create a simple form for calculating the total price. I created the form and it works fine. Now I need help with WiX Pay - service provider: Stripe. The goal is to allow you to pay the total price through the WIX PAY: service provider: STRIPE.
The total price changes dynamically depending on the quantity. See example:

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and here is my code on the page:

// API Reference: https://www.wix.com/corvid/reference
// “Hello, World!” Example: https://www.wix.com/corvid/hello-world

export function quantity1_change(event) {
 let price = Number($w('#UnitPrice1').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice1').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text)); 
}

export function quantity1_click(event) {
 let price = Number($w('#UnitPrice1').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice1').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text)); 
}   // Add your code for this event here: 

export function quantity2_change(event) {
 let price = Number($w('#UnitPrice2').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice2').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text)); 
}

export function quantity2_click(event) {
 let price = Number($w('#UnitPrice2').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice2').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text)); // Add your code for this event here: 
}

export function quantity3_change(event) {
 let price = Number($w('#UnitPrice3').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice3').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text));   // Add your code for this event here: 
}

export function quantity3_click(event) {
 let price = Number($w('#UnitPrice3').text);
 let selectedQuantity = Number(event.target.value);
    $w('#SubtotalPrice3').text = String(selectedQuantity * price);
        $w('#TotalPrice').text = String(Number($w('#SubtotalPrice1').text) + Number($w('#SubtotalPrice2').text)+ Number($w('#SubtotalPrice3').text)); 
}

Can you please advise me how to make payment the total price through WIX Payment Methods?

2

Does anyone experience with WIX Pay integration? Any idea?