[Plugin: WP Property] Filters help

Hello,

I was seeking help on WP Property plugin filters.

Its easy to add new property types and attributes in the Plugin panel. But, I want to do that through filters.

I have had success adding a new property type using this code:

function new_property($wp_properties) {

	$new_columns = array(
		'multi_home' => __('Multi Home', 'ThemeName'),
	);
    return array_merge($wp_properties, $new_columns);
}
add_filter('wpp_property_types' , 'new_property');

It works fine, it adds the new property type: Multi home.

But, the problem is – that when I delete it from admin panel – It re-appears after saving the options.

I should work like all other default properties, i.e delete after they are deleted from Plugin settings page.

Any help would be heartily appreciated.

Thanks,