Woocommerce order total in Paypal

I need woocommerce expert, only they can help. I have a price (Order Total) in woocommerce checkout page. There I am calculating and adding 20% VAT using custom PHP code in the .php page. I notice that the VAT value is not added when it is sent to the Paypal page. It is only sending the total value without 20% which I have added. Need someone really awesome in PHP and woocommerce and can change that for me. HALF HOUR JOB, $5 fixed ! PLEASE CHECK THE ATTACHMENT***