override_base_theme_functions.php

<?php

//like you want to override form_field($field, $style), then do this:

qw_add_action('form_field', 'my_form_field_override');
function my_form_field_override($themeclass, $field, $style){
	if (@$field['type'] == 'qw_qaads_multi_text') {
            $themeclasss->form_prefix($field, $style);
            $themeclass->qw_qaads_form_multi_text($field, $style);
            $themeclass->form_suffix($field, $style);
            
        }
}