[Plugin: Jazzy Forms] vat, net, cost

Hi mickymac101,

thanks, I won’t accept any money at this point in time, because I don’t have enough time to offer serious support either. This one should be easy, thou.

Let’s say you set up input elements with the following IDs: litres, total_price, vat_rate.

Then you would set up an output element with ID net_price and type in as formula:
total_price/(1+vat_rate/100)

You can reuse this result in another element with ID vat with the following formula:
total_price-net_price

The formula for the output element with ID cost_per_litre is just as easy:
net/litres

I hope I got this one right. Anyway, I think the general idea should be clear because it’s easy maths. If you still see errors, it might be some kind of Javascript issue on your page that prevents Jazzy Forms from executing correctly. In fact with version 0.10 you should not see “Invalid Formula” because I aligned the error messages with those in spreadsheet programs.