Change User Role when Cancelled EDD Subscription

gistfile1.txt

function wd_downgrade_fieldstaff( $sub_id, $subscription ) {
	$u = new WP_User( $subscription->customer->user_id );
	$u->remove_role( 'fieldstaff' );
	$u->add_role( 'subscriber' );
}
add_action( 'edd_subscription_cancelled', 'wd_downgrade_fieldstaff', 10, 2 );