Get_term_meta() always returns false

I added an extra field (dropdown list with select options), when the user creates or edits a category from the WordPress dashboard. I am also able to store the selected value in the wp_termmeta table. However, I need to display the selected value from the dropdown list after page refresh. I am using the functions get_term_meta() and update_post_meta(), however get_term_meta() always returns false and I cannot assign a selected value for any of the options: function changePostOrder(){ $post_order = get_term_meta($_POST[‘tag_ID’], ‘post-order’, true); var_dump($post_order); // $post_order returns false, while it should return oldest or newest ?> value=”oldest”>oldest value=”newest”>newest