Product Group Limits for Magento

product.phtml

<script type="text/javascript">
    jQuery(document).ready(function() {
        var maxHeight = <?php echo intval($_product->getMaxHeight()); ?>;
        jQuery('.qty').change(function(){
            var currentHeight = 0;

            jQuery('.qty').each(function(index) {
                var height = parseInt(jQuery(this).attr('data-height'));
                var qty = parseInt(jQuery(this).val());

                if(!isNaN(height)) {
                    currentHeight += (height * qty);
                }
            });

            if(maxHeight < currentHeight) {
                // Show message that property sum is exceede
                console.error("Max height exceeded", "Allowed", maxHeight, "Result", currentHeight);
            }
            console.log("Current", currentHeight)
        });
    });
</script>