I am trying to create a work around to deal with the fact that PayPal does not have a system to calculate sales tax based on county. So, I have added two dropdown boxes (one for New York & one for Pennsylvania) above the PayPal Express Checkout button so that a session variable for their county can be set prior to going to PayPal. This being said, if the customer use our local checkout then I also need to set a county session variable set for tax calculation. Based on other parts of this (validation / two state..) it was easier to have two different county variable for each state - 1 for paypal & 1 for local. So what I am trying to accomplish is a tax calculation based on if either of the county 2 county variable exist in addition to the shipping_state_province.
if either eCartCheckoutForm_ship_countypa = PAOTHER
eCartCheckoutForm_ship_countypp2 = PAOTHER
eCartCheckoutForm_shipping_state_province = PA
then add tax.
Hope this helps. Thanks.