add issue #217
add issue #217

jonnguy/HSTracker,mattwelborn/HSTracker,mattwelborn/HSTracker,bmichotte/HSTracker,bmichotte/HSTracker,ifeherva/HSTracker,jonnguy/HSTracker,jonnguy/HSTracker,ifeherva/HSTracker,mattwelborn/HSTracker,mattwelborn/HSTracker