Sell/Buy chars

[Sigoles]

Hello, Help with this script (GESIOR ACC 2012):

Page sellchar dont working!

<?PHP
    if($logged) {
        $main_content .= '<center><b>Here you can put your character on sale!</center></b><br>';
        $main_content .= 'If you put your character on sale anyone can buy it, you will lose acces to that character and you wont be able to log in with that character until someone buys it, you can also delete your offer by talking to an admin!<br><b>when someone buys your character you will get the price in points!</b>';
        $main_content .= '<br>';
        $main_content .= '<TABLE BORDER=1 CELLSPACING=1 CELLPADDING=4 WIDTH=100%><TR BGCOLOR='.$config['site']['vdarkborder'].'><TD CLASS=white width="64px"><CENTER><B>Sell your characters</B></CENTER></TD></TR>';
        $main_content .= '<TR BGCOLOR='.$config['site']['darkborder'].'><TD CLASS=black width="64px"><B></B>';
        
        $players_from_logged_acc = $account_logged->getPlayersList();
                            
                                $players_from_logged_acc->orderBy('name');
                                $main_content .= '<form action="" method="post"><select name="char">';
                                foreach($players_from_logged_acc as $player)
                                {
                                    $main_content .= '<option>'.$player->getName().'</option>';
                                }
        
        $main_content .= '</select>Select a character to sell<br>';
        $main_content .= '<input type="text" name="price" maxlength="10" size="4" >Select the price of the character<br>';
        $main_content .= '<input type="submit" name="submit" value="Sell character"></TD></TR>';
                            $main_content .= '</form></table>';
                            
                            if (isset($_POST['submit'])) {
                                
                            $char = stripslashes($_POST['char']);
                            $price = stripslashes($_POST['price']);
                            
                            if ($char && $price) {

                                if(is_numeric(trim($_POST['price']))) {
                                
                                        $check2 = $SQL->query("SELECT * FROM `players` WHERE `name` = '$char'") or die(mysql_error());
                                foreach ($check2 as $re) {
                                    $voc = $re['vocation'];
                                    $oid = $re['account_id'];
                                }
                                $check1 = $SQL->query("UPDATE `players` SET `account_id` = 1 WHERE `name` = '$char'") or die(mysql_error());
                                $check3 = $SQL->query("INSERT INTO `sellchar` VALUES ('','$char','$voc','$price','1','$oid')");
                                $main_content .= '<b><center>You added your character correctly, thanks!</b></center>';
                                header("Location: index.php?subtopic=buychar");
                                
                                } else {
                            
                                $main_content .= '<b><center>Set a numeric price!!</b></center>';
                                }
                                
                            } else {
                                    $main_content .= '<b><center>Fill out all fields!</b></center>';
                            }
                            
                        }
    } else {
        $main_content .= '<b><center>Please log in first!</b></center>';
    }
?>

database:

CREATE TABLE IF NOT EXISTS `sellchar` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(40) NOT NULL,
`vocation` int(11) NOT NULL,
`price` int(11) NOT NULL,
`status` varchar(40) NOT NULL,
`oldid` varchar(40) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;