woocommerce update cart price

1function before_calculate_totals( $cart_obj ) {
2 if ( is_admin() && ! defined( 'DOING_AJAX' ) ) {
3  return;
4 }
5 // Iterate through each cart item
6 foreach( $cart_obj->get_cart() as $key=>$value ) {  
7   if( isset( $value['csCost'] ) ) {
8    $getPrice = $value['data']->get_price();
9     $price = $value['csCost'] + $getPrice;
10     $value['data']->set_price( ( $price ) );
11   }
12   if( isset( $value['setCost'] ) ) {
13    $getPrice = $value['data']->get_price();
14     $price = $value['setCost'] + $getPrice;
15     $value['data']->set_price( ( $price ) );
16   }
17  
18 }
19}
20add_action( 'woocommerce_before_calculate_totals', 'before_calculate_totals', 10, 1 );