in Tablerate.php I want to change the calculation.

So for some Products with custom options like width, height the shipping cost must change. I tried with this method to find out if one product in cart has width or height greater than 60cm (example).

But currently I have no Idea how to get custom option values...

this code working well.

foreach ($request->getAllItems() as $item) {

        echo 'Name: '.$item->getName().
            '<br/> SKU:'.$item->getSku().
            '<br/> ProductID: '.$item->getProductId().
            '<br/> Price: '.$item->getPrice().'<br/>';   }

Thanks