Populate Product Regular Price with a calculated ACF Field Value

Based on a reference, I was able to populate the field of the regular price based on ACF field alue using the following Code :

add_action( 'woocommerce_process_product_meta',update_product_price_from_acf', 100, 1 );
function update_product_price_from_acf( $product_id ) {
if( $price_acf = get_field( 'netsalesprice', $product_id ) )
    update_post_meta( $product_id, '_regular_price', $price_acf );
}

This, however, needs me to go into each product and click update for it to load into the regular price field and is not an automatic fix.
How to make this auto populate without having to click Update on Each Product?