Trade status not changing

[Dinocanid]

For some reason, changing the trade status of any pet above level 1 or 0 doesn't seem to work. I haven't touched any code related to trades, but here's mine anyway:

PHP Code:

public function trade(){
        $mysidia = Registry::get("mysidia");        
        if($mysidia->input->get("confirm") == "confirm"){
            switch($this->adopt->getTradeStatus()){
                case "fortrade":
                    $this->adopt->setTradeStatus("notfortrade", "update");
                    $message = $mysidia->lang->trade_disallow;
                    break;
                case "notfortrade":
                    $this->adopt->setTradeStatus("fortrade", "update");
                    $message = $mysidia->lang->trade_allow;
                    break;
                default:
                    throw new InvalidActionException("global_action");
            }
        }
        else{
            $message = "Are you sure you wish to change the trade status of this adoptable?
                        <center><b><a href='{$this->adopt->getAdoptID()}/confirm'>Yes I'd like to change its trade status</a></b><br /><br />
                        <b><a href='../../myadopts'>Nope I change my mind! Go back to the previous page.</a></b></center><br />";
        }
        $this->setField("aid", new Integer($this->adopt->getAdoptID()));
        $this->setField("image", $this->image);                
        $this->setField("message", new String($message));                
    } 


PHP Code:

public function trade(){
        $mysidia = Registry::get("mysidia");
        $aid = $this->getField("aid")->getValue();        
        $image = $this->getField("image");    
        $message = $this->getField("message")->getValue();        
        $document = $this->document;
        $document->setTitle($this->lang->trade);
        $document->add($image);
        $document->addLangvar($message);
    }