Woocommerce variation sort

In woocommerce/single-product/add-to-cart/variable.php i found the part where the dropdown menu is being formed. I want to sort the variations like natsort(); so like:
1
2
10

At the moment the variable products are being sorted on alphabet:
1
10
2

Is there a way to edit the code below to sort it that way?

<?php foreach ( $attributes as $attribute_name => $options ) : ?>

<tr>
<td class=”label”><label for=”<?php echo sanitize_title( $attribute_name ); ?>”><?php echo wc_attribute_label( $attribute_name ); ?></label></td>
<td class=”value”>

<?php
$selected = isset( $_REQUEST[ ‘attribute_’ . sanitize_title( $attribute_name ) ] ) ? wc_clean( $_REQUEST[ ‘attribute_’ . sanitize_title( $attribute_name ) ] ) : $product->get_variation_default_attribute( $attribute_name );
wc_dropdown_variation_attribute_options( array( ‘options’ => $options, ‘attribute’ => $attribute_name, ‘product’ => $product, ‘selected’ => $selected ) );
?>
</td>
</tr>

<?php endforeach;?>