Paypal Adaptive Payments Script

Using PayPal's Adaptive Payments API we need to create a simple two way function to handle funds from sales and refunds. Currently, when a sale is made we pass a number called commission. What you need to do is as follows: 1) If (primary PayPal account receives payment with commission value > 0) {send commission to secondary PayPal account ) 2) if (full refund issued for a payment with commission value > 0) {refund commission from secondary PayPal account } 3) if (partial refund issued for a payment with commission value > 0) {refund commission from secondary PayPal account as follows: (partialRefund/salePrice)/commission} Basic English documentation required so variables can be changed easily.