In view, while selecting field "Heartbeat Node Id" nothing is coming !!!

Hello,
I was trying to group activities based on organic groups. Nothing works but filter the activities based on nids of the row in view filter. When i was selecting "Heartbeat Node Id" in view field it is making a query where its searching for rid in heartbeat_activities instead of nid (BUG). I added the below mentioned fixes, and since i am new to drupal, just wanted to know is it all correct.

----------------------------@@@@@@FIXES@@@@@@--------------------

1. FILE : HEARTBEAT.VIEW.INC LINE# 28 CHANGED FIELD rid to nid

2. FILE : HEARTBEAT.VIEW.INC LINE# 83 CHANGED handler views_handler_field_node_link to views_handler_field_numeric