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I want to include an offer wall on my website using the code below. <iframe src="[login to view URL]" frameborder="0" width="860" height="2400" ></iframe> I need to replace the "YOUR_USER_ID" with a unique user id generated when users sign up. I will also need help with the postback setup- Example of post back code: Very Important: Our system expects a "1" (number one) without quotes as the sole response to our Postback request. Sample PHP Postback Script <?php /* * Postback Example - [login to view URL] * */ $your_app_key = "your_app_key_find_it_in_Integrate_section_of_your_account"; // Your database credentials. define("MYSQL_HOST", "localhost"); define("MYSQL_PORT", "3306"); define("MYSQL_DB", "your_db"); define("MYSQL_TABLE", "your_table"); define("MYSQL_USER", "username"); define("MYSQL_PASS", "password"); $mysqli = new mysqli(MYSQL_HOST, MYSQL_USER, MYSQL_PASS, MYSQL_DB); if ($mysqli->connect_errno) { echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error; } // Get Postback variables, for a complete list of list of variables, please go to [login to view URL] Postback tab $transaction_id = urldecode($_GET["transaction_id"]); $offer_id = urldecode($_GET["offer_id"]); $offer_name = urldecode($_GET["offer_name"]); $amount = urldecode($_GET["amount"]); //This is what your user is paid in your virtual currency, for example 300 coins $virtual_currency = urldecode($_GET["virtual_currency"]); // This is simply the name of the currency of your app $userid = urldecode($_GET["userid"]); // $signature = urldecode($_GET["signature"]); $payout = urldecode($_GET["payout"]); $subid1 = urldecode($_GET["subid1"]); $subid2 = urldecode($_GET["subid2"]); $subid3 = urldecode($_GET["subid3"]); //Check the signature $my_signature = md5($transaction_id."/".$offer_id."/".$your_app_key); if($my_signature != trim($signature)){ //Signatures don't match echo "0"; exit(0); } //Possible make some other checks like if userid is actually a user in your system... //then simply award the coins to your user $sql = "UPDATE ".MYSQL_TABLE." SET coins=coins+".$mysqli->real_escape_string($amount)." WHERE userid = ".$mysqli->real_escape_string($userid); $result = $mysqli->query($sql); if($result){ echo "1"; }else{ echo "0"; } exit(0); ?> This post back will then affect the users balance.