Paypal Payment Via Credit Card API Very Small Work of Bug Fix

I am working on one website and I have integrated paypal payment module to accept payemnt via credit card. Its almost over but there is one problem in sending detail to paypal's server so It is showing error of Invalid Parameter. This is very small work for right candidate may be of 1 or 2 hour. I can pay $25 for this. Need work done within some hours. I want someone to strat immediately and finish in some hours. We have lots of work of php and web designing for right candidate. Need someone experienced in paypal API of credit card payment module. Show me your work with similar paypal API example. Many projects are in pipeline with good budget. API integration is completed but need someone to find out error in array we are passing to the paypal's server so there is no major work for experienced programmer. Happy Bidding!!!!!