How to retrieve the output of taxonomy_form ?

Hello!

I'm using taxonomy_form to create a form, but i don't manage to retrieve the result of my form.
When i do the following i don't get the selected location.. i'm a php beginner so quite likely thi is easy but i don't manage to get it. Sometimes i get'Array', sometimes nothing, depending on what i put...

Any idea/help very welcome!!

Matt

function taxonomy_location_form($form_state){
  $form = array();
  $form['location'] = taxonomy_form(3,1,NULL,taxonomy);
  $form['submit'] = array (
    '#type' => 'submit',
    '#value' => t('APPLY'), 
  );
  return $form;

}

function taxonomy_location_form_submit ($form_id, &$form_state) {
  $location = $form_state['values']['location'];
  $output = t('The following location(s) have been selected ');
  $output .= $location;
}