Not working Weight for Extra product Option for woocommerce

<?php
/*
Plugin Name: WooCommerce TM Extra Product Options Weight addon
Plugin URI: https://themecomplete.com/
Description: Addon to add weight support for radio buttons, checkboxes and select boxes
Version: 1.0.4
Author: themecomplete
Author URI: https://themecomplete.com/
*/

// Prevents direct file access
if ( ! defined( ‘WPINC’ ) ) {
die;
}

/** Add the weight setting to radio buttons **/
function my_add_extra_choice( $options = array() ) {
$options[] = array(
“name” => “weight”,
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ ),
“admin_class” => “tm_cell_display”,
“type” => “radiobuttons”,//selectbox , radiobuttons , checkboxes
“field” => array(
“wpmldisable” => 1,
“default” => “”,
“type” => “number”,
“tags” => array( “class” => “t tm_option_display”, “value” => “” ),
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ )
)
);
$options[] = array(
“name” => “weight”,
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ ),
“admin_class” => “tm_cell_display”,
“type” => “checkboxes”,//selectbox , radiobuttons , checkboxes
“field” => array(
“wpmldisable” => 1,
“default” => “”,
“type” => “number”,
“tags” => array( “class” => “t tm_option_display”, “value” => “” ),
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ )
)
);
$options[] = array(
“name” => “weight”,
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ ),
“admin_class” => “tm_cell_display”,
“type” => “selectbox”,//selectbox , radiobuttons , checkboxes
“field” => array(
“wpmldisable” => 1,
“default” => “”,
“type” => “number”,
“tags” => array( “class” => “t tm_option_display”, “value” => “” ),
“label” => __( ‘Weight’, ‘woocommerce-tm-extra-product-options’ )
)
);

return $options;
}

add_filter( ‘wc_epo_extra_multiple_choices’, ‘my_add_extra_choice’, 50, 1 );

/** Save the weight setting to cart object **/
function wc_epo_add_cart_item_data_multiple( $array, $object ) {
$key = array_search( $object->key, $object->element[‘option_values’] );
if ( $key === null || $key === false ) {
$key = false;
}
$weight = 0;
switch ( $object->element[‘type’] ) {
case “checkbox”:
if ( $key !== false && isset( $object->element[‘extra_multiple_choices’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’][ $key ] ) ) {
$weight = $object->element[‘extra_multiple_choices’][‘weight’][ $key ];
}
break;
case “radio”:
if ( $key !== false && isset( $object->element[‘extra_multiple_choices’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’][ $key ] ) ) {
$weight = $object->element[‘extra_multiple_choices’][‘weight’][ $key ];
}
break;
case “select”:
if ( $key !== false && isset( $object->element[‘extra_multiple_choices’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’] ) && isset( $object->element[‘extra_multiple_choices’][‘weight’][ $key ] ) ) {
$weight = $object->element[‘extra_multiple_choices’][‘weight’][ $key ];
}
break;
default:
break;
}

$array[‘weight’] = $weight;

return $array;
}

add_filter( ‘wc_epo_add_cart_item_data_multiple’, ‘wc_epo_add_cart_item_data_multiple’, 10, 2 );

/** Add the weight to the product **/
function add_custom_weight( $cart_object ) {

if ( ! function_exists(‘themecomplete_get_id’) || !$cart_object || ( is_admin() && ! defined( ‘DOING_AJAX’ ) ) || $cart_object->is_empty() ) {
return;
}
if (!isset($cart_item[‘tc_weight’])){
$cart_item[‘tc_weight’] = array();
}
foreach ( $cart_object->get_cart() as $cart_item ) {

if ( isset( $cart_item[‘tc_weight’][themecomplete_get_id($cart_item[‘data’])])){
continue;
}
$extra_weight = 0;
if ( isset( $cart_item[‘tmcartepo’] ) ) {
foreach ( $cart_item[‘tmcartepo’] as $key => $value ) {
if ( isset( $value[‘weight’] ) ) {
$quantity = 1;
if ( isset( $value[‘quantity’] ) ){
$quantity = floatval( $value[‘quantity’] );
}
$extra_weight = $extra_weight + ( $quantity * floatval( $value[‘weight’] ) );
}
}
}
if ( $cart_item[‘data’] && $extra_weight ){
$weight = $cart_item[‘data’]->get_weight();
$extra_weight = floatval( $extra_weight );
$weight = floatval( $weight );
//var_dump($extra_weight + $weight);$extra_weight = 45;
$cart_item[‘data’]->set_weight( $extra_weight + $weight );
// $cart_item[‘data’]->set_weight( 10 );
$cart_item[‘data’]->tc_weight = ‘added’;
$cart_item[‘tc_weight’][themecomplete_get_id($cart_item[‘data’])] = ‘added’;
}
}

}

add_action( ‘woocommerce_before_calculate_totals’, ‘add_custom_weight’, 10, 1 );