Reversing charge VAT wording on sales invoice - R42565

Hello, we have a direct ship scenario where our supplier in a european country is despatching goods to our customer in the same european country.  As we are not yet locally registered for VAT in that country we will be reversing the charges and therefore need to include a specific wording on our invoice to our customer.  Do we also need to inclide the VAt amount that we are reversing the charges for?  And if so how can we retrieve this figure at time of invoice print?  Many thanks.