Item Function Is Invalid

[Hwona]

Hello, I was thinking about trying to make a new item function, but whenever I try to use an item, it says the item function is invalid. Can someone help or point me in the right direction? :3

Yes, I created a new row in adopts_items_functions.

Here's the code:

PHP Code:

function items_genderf($item, $adopt){
        $mysidia = Registery:: get("mysidia");
        //Let's check if the adoptable is already female.
        $gender = $mysidia -> db -> select ("gender") -> fetchObject();
        if($gender = "f") {
            //The adoptable is already female
            $note = "Your adoptable is already female.";
        }
        else{
            //The adoptable is male. It's gender can be switched to female.
            switch($adopt->gender){
                case "f":
                    $mysidia -> db -> update("owned_adoptables", array("gender" => 'f'),"aid='{$adopt->aid}' and owner ='{$item->owner}'");
                    $note = "Your adoptable {$adopt->name} is now female.";
            }
            //Update item quantity...
            $delitem = $item->remove();
        }
        return $note;
        } 


It's suppossed to plug into the existing functions_items script, so I didn't include the php tags.