Write some Software -- 2

hi all, i have facebook group autoposter php application. i bought it from [login to view URL] . i need a person that would spend couple of hours just going through the script(its huge) and then when he/she gets good understanding of how the php application works, would change few thing to my own linking. TROUBLE IS THAT I DONT LIKE HOW MY PHP APPLICATION GRANTS ACCESS(AUTHORISATION TOKEN) FROM FACEBOOK PROFILE. I WANT IT CHANGED. SUCCESSFULL CANDDATE WILL NEED TO WRITE/AMEND SOME PHP CODE IN CURRENT APPLICATION AND POSSIBLY CREATE NEW TYPE "FACEBOOK GRAPH API 2.1 VERSION" FACEBOOK WEB APPLICATION. CURRENT APP VERSION IS API 2.0. SKILLS NEEDED: 1. VERY GOOD KNOWLEDGE OF PHP MYSQL. 2. VERY GOOD KNOWLEDGE OF FACEBOOK GRAPH API AND FACEBOOK WEB APP CREATION AND MANAGEMENT. 3. VERY GOOD KNOWLEDGE OF HOW TO MAKE WEBSITE LOGIN WITH FACEBOOK ACCOUNT AND OAUTH AND SECURITY TOKENS,ECT.. PLEASE ONLY PROFFESSIONALS AND NO TIME WASTERS. BE AWARE THAT YOU WILL NEED TO SPEND SOME TIME GOING THROUGH THE SCRIPT TO GET UNDERSTANDING OF HOW IT WORKS AND TOGETHER ME AND YOU WILL CHANGE IT TO MY LIKING. THANKS HAPPY BIDDING