Price doesn't change when a different variant is selected

Store Design
1

Hello, i need help on the price changing issue. I have tried implementing code that was provided in other solution form but no luck. This is my shop link : www.portacare.com, theme: Booster premium 2.2.1

2

@Fnoor1 Try changing below.

var selectCallback = function(variant, selector) {
    var addToCart = jQuery('#AddToCart-product-template'),
        productPrice = jQuery('#ProductPrice-{{ section.id }}'),
        comparePrice = jQuery('#ComparePrice-{{ section.id }}');
3

where would i change this?