The answer of Daresh is the best
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Hello, to solve your problem you can use "updateProduct".
To do so you have 2 options.
1. Find the trigger that is activated when you modify the attributes of a product and insert this new line of code:
prestashop.emit('updateProduct', {})
2. Another option is to look for the javascript of your theme and at the end of everything place this script:
$(document).ready( function(){ $('.product-variants select').on('change'){ prestashop.emit('updateProduct', {}) } } );