(Quick Help Appreciated) Paypal Standard

Ok when you use webassist wizard the confirm page is set up for you. Now, Paypal standard doesn't allow the billing and shipping to be different so I deleted the shipping form. Problem is that the tax is calculated by the shipping form. How can I change it so it works with the billing form?

This may be very difficult I tried 2 things.

1. since that session was set for the shipping form I applied it to the billing form but that caused paypal standard to not add billers address to final payment (it leaves invoices blank so I don't know who to send at all)

2. I tried to set the tax on paypal merch page but since it is using a webassist session it doesn't ask for it. How can I set it up so that when you are sent to paypal there it asks for tax by entering the zipcode like paypal standard normally works.

thank you

1) you can update the hidden form elements on the bottom of the page to alter what is sent to paypal and include an invoice number. The email may still be referring to the old session variables. You should just update so all of the shipping session variables are set from the billing form.

2) You would have to check the paypal api, but I think you may just need to delete the tax hidden form element on the confirm page and that will cause it to use the paypal tax calculation.