Multidimensional Flashdata arrays?

[eluser]sacarias[/eluser]
Do multidimensional arrays work with the flash data functions?

I have this code that works in normal php applications. i dont like to redirect to a success page so when there is an error on a form i like to use this to collect each error and display it to them right above the form.

Everytime you catch an error you use this

EX.

Code:

if(empty($username)){
$this->simpleMessages->addMessage("login-form", "error", "You must specify a username.");
}

Code:

function addMessage($location, $type, $description){
        return $this->messages[] = array("location" => $location, "type" => $type, "description" => $description));
    }

In order for the messages to be saved, they need to be saved in flashdata....which was the easiest fix, but now its turning out to be difficult.

thanks for your time.