i want to calculate VAT on shipping fee

i want to calculate VAT on shipping fee

hi
i am using zoho book in sausi arabia, he in saudi i obligated to add VAT on shipping fee, i tried to add shiping charge in zoho this message apears to me: 
( Shipping and miscellaneous charges cannot be enabled when registered for VAT. Please mention any Shipping/miscellaneous charges as additional line items during the transaction. )

i don't want to add shipping fee as item, so how i enable shipping option and VAT option together? and alos Adjustments and discount.

thanks