Get new variable from permalink

Hi people!

I need to get a variable appended to the permalink, that should be in a post or custom post type.

No problem getting it when permalink are disabled, this is the code I’m using:

function add_query_vars($public_query_vars) {
    $public_query_vars[] = 'fruits';
    return $public_query_vars;
}

then I get using

get_query_var('fruits')

The problem is with enabled permalinks.

Using:

add_filter('rewrite_rules_array','mycode_add_rewrite_rules');

function mycode_add_rewrite_rules($rules){

	add_rewrite_tag('%fruits%','([^&]+)');
	add_rewrite_rule('^([^/]+)/([^/]+)/([^/]+)/?','index.php?pagename=$matches[2]&fruits=$matches[3]','top');
}

I cannot get the variable, then never occurs again 404 error when I add one or more “/” (ex. https://www.site.com/2012/06/title/first/second/third/)

Could somebody help me resolving this?

Thanks ??