public function on_product_write_panel_tabs()
    {
        if (WC_Dynamic_Pricing_Compatibility::is_wc_version_gte_2_3()) {
            ?>
			<li class="pricing_tab dynamic_pricing_options dynamic_pricing_options_23"><a href="#dynamic_pricing_data"><?php 
            _e('Dynamic Pricing', 'wc_pricing');
            ?>
</a></li>

		<?php 
        } elseif (WC_Dynamic_Pricing_Compatibility::is_wc_version_gte_2_1()) {
            ?>
	
			<li class="pricing_tab dynamic_pricing_options dynamic_pricing_options_21"><a href="#dynamic_pricing_data"><?php 
            _e('Dynamic Pricing', 'wc_pricing');
            ?>
</a></li>
		<?php 
        } else {
            ?>
			<li class="pricing_tab dynamic_pricing_options"><a href="#dynamic_pricing_data"><?php 
            _e('Dynamic Pricing', 'wc_pricing');
            ?>
</a></li>

		<?php 
        }
    }
 public function on_init()
 {
     //Filter for the cart adjustment for advanced rules.
     if (WC_Dynamic_Pricing_Compatibility::is_wc_version_gte_2_1()) {
         add_filter('woocommerce_cart_item_price', array(&$this, 'on_display_cart_item_price_html'), 10, 3);
     } else {
         add_filter('woocommerce_cart_item_price_html', array(&$this, 'on_display_cart_item_price_html'), 10, 3);
     }
 }