Use correct variable name.

lib/ansible/modules/extras/notification/hipchat.py

@@ -96,13 +96,9 @@ def send_msg(module, token, room, msg_from, msg, msg_format='text',
     params['message_format'] = msg_format
     params['color'] = color
     params['api'] = api
+    params['notify'] = int(notify)
 
-    if notify:
+    url = api + MSG_URI_V1 + "?auth_token=%s" % (token)
-        params['notify'] = 1
-    else:
-        params['notify'] = 0
-
-    url = api + "?auth_token=%s" % (token)
     data = urllib.urlencode(params)
 
     if module.check_mode:
@@ -127,7 +123,7 @@ def send_msg_v2(module, token, room, msg_from, msg, msg_format='text',
     body['message'] = msg
     body['color'] = color
     body['message_format'] = msg_format
-    params['notify'] = notify
+    body['notify'] = notify
 
     POST_URL = api + NOTIFY_URI_V2