Change wp seo markup

gistfile1.txt

/**
 Change the wrapper of breadcrums to span to ul
 **/
function change_breadcrumb_output_wrapper($old){
	return "ul";
}
add_filter( 'wpseo_breadcrumb_output_wrapper', 'change_breadcrumb_output_wrapper' );

/**
 Change the wrapper of each breadcrum to span to ul
 **/
function change_breadcrumb_single_link_wrapper($old){
	return "li";
}
add_filter( 'wpseo_breadcrumb_single_link_wrapper', 'change_breadcrumb_single_link_wrapper' );