Convert Crystal Reports Invoice to Jasper Reports

I have an advanced Crystal Reports with formulas for two languages(German/English) and the normal calculations like prices, tax and.... This is in Crystal Reports and needs to converted to Jasper Reports(same database/same fields) The report has some Parameter to start and does have 4 different Parameter options -Offer -Order -Delivery - Invoice All are similar. E.G.: Delivery does ot show any prices, invoice it as. If you are familiar in you can create it complete new in Jasper. I will use it with jasper Starter. I can give you access to a demo database so you analyse how the crystal is working, if you want to create new, you can test direct to the demo database.