Index: dialin/hd/ui_proxy.py
===================================================================
diff -u -rf1ac0e8ba99d1ddb0138918e408dffc0f5eba3c5 -r793aef3c5d08f4c38d44a7c4d881c8f297a84801
--- dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision f1ac0e8ba99d1ddb0138918e408dffc0f5eba3c5)
+++ dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision 793aef3c5d08f4c38d44a7c4d881c8f297a84801)
@@ -39,6 +39,7 @@
     MSG_ID_BLOOD_DIALYSATE_FLOW_SETTING_CHANGE_RESPONSE_FROM_HD = 0x0018
     MSG_ID_UI_REQUEST_HD_VERSION = 0x001C
     MSG_ID_UI_HD_VERSION_RESPONSE = 0x001D
+    MSG_ID_UF_SETTINGS_CHANGE_CONFIRM_RESPONSE_FROM_HD = 0x002E
 
     LITER_TO_ML_CONVERSION_FACTOR = 1000.0
     UF_CMD_PAUSE = 0
@@ -97,7 +98,21 @@
     END_POS_UF_CHG_RSP_RATE = START_POS_UF_CHG_RSP_RATE + 4
     START_POS_UF_CHG_RSP_RATE_DIFF = END_POS_UF_CHG_RSP_RATE
     END_POS_UF_CHG_RSP_RATE_DIFF = START_POS_UF_CHG_RSP_RATE_DIFF + 4
+    START_POS_UF_CHG_RSP_OLD_RATE = END_POS_UF_CHG_RSP_RATE_DIFF
+    END_POS_UF_CHG_RSP_OLD_RATE = START_POS_UF_CHG_RSP_OLD_RATE + 4
 
+    # HD response to UF volume change confirmation message field positions
+    START_POS_UF_CNF_RSP_RESP = DenaliMessage.PAYLOAD_START_INDEX
+    END_POS_UF_CNF_RSP_RESP = START_POS_UF_CNF_RSP_RESP + 4
+    START_POS_UF_CNF_RSP_REJECT_REASON = END_POS_UF_CNF_RSP_RESP
+    END_POS_UF_CNF_RSP_REJECT_REASON = START_POS_UF_CNF_RSP_REJECT_REASON + 4
+    START_POS_UF_CNF_RSP_VOL = END_POS_UF_CNF_RSP_RESP
+    END_POS_UF_CNF_RSP_VOL = START_POS_UF_CNF_RSP_VOL + 4
+    START_POS_UF_CNF_RSP_TIME = END_POS_UF_CNF_RSP_VOL
+    END_POS_UF_CNF_RSP_TIME = START_POS_UF_CNF_RSP_TIME + 4
+    START_POS_UF_CNF_RSP_RATE = END_POS_UF_CNF_RSP_TIME
+    END_POS_UF_CNF_RSP_RATE = START_POS_UF_CNF_RSP_RATE + 4
+
     # HD response to blood/dialysate flow change request message field positions
     START_POS_BLD_DIAL_CHG_RSP_ACCEPTED = DenaliMessage.PAYLOAD_START_INDEX
     END_POS_BLD_DIAL_CHG_RSP_ACCEPTED = START_POS_BLD_DIAL_CHG_RSP_ACCEPTED + 4
@@ -123,6 +138,9 @@
                                                                   self.MSG_ID_UF_SETTINGS_CHANGE_RESPONSE_FROM_HD,
                                                                   self.handler_uf_change_response)
             self.can_interface.register_receiving_publication_function(channel_id,
+                                                                  self.MSG_ID_UF_SETTINGS_CHANGE_CONFIRM_RESPONSE_FROM_HD,
+                                                                  self.handler_uf_change_confirm_response)
+            self.can_interface.register_receiving_publication_function(channel_id,
                                                                   self.MSG_ID_TREATMENT_DURATION_SETTING_CHANGE_RESPONSE_FROM_HD,
                                                                   self.handler_treatment_duration_change_response)
             self.can_interface.register_receiving_publication_function(channel_id,
@@ -155,6 +173,7 @@
         self.uf_change_rate_ml_min = 0.0
         self.uf_change_time_diff = 0
         self.uf_change_rate_diff = 0.0
+        self.uf_old_rate_ml_min = 0.0
         # initialize variables that will be populated by response from HD to blood & dialysate flow rate change request
         self.blood_and_dialysate_flow_rate_change_succeeded = False
         self.blood_and_dialysate_flow_rate_change_reject_reason = 0
@@ -306,19 +325,56 @@
             message['message'][self.START_POS_UF_CHG_RSP_RATE:self.END_POS_UF_CHG_RSP_RATE]))
         rtd = struct.unpack('f', bytearray(
             message['message'][self.START_POS_UF_CHG_RSP_RATE_DIFF:self.END_POS_UF_CHG_RSP_RATE_DIFF]))
+        ort = struct.unpack('f', bytearray(
+            message['message'][self.START_POS_UF_CHG_RSP_OLD_RATE:self.END_POS_UF_CHG_RSP_OLD_RATE]))
 
         if rsp[0] == self.RESPONSE_REJECTED:
             resp = False
         else:
             resp = True
         self.uf_change_succeeded = resp
         self.uf_change_reject_reason = rea[0]
-        self.UFChangeVolumeL = vol[0] / self.LITER_TO_ML_CONVERSION_FACTOR
+        self.uf_change_volume_ml = vol[0] / self.LITER_TO_ML_CONVERSION_FACTOR
         self.uf_change_time_min = tim[0]
         self.uf_change_time_diff = tmd[0]
         self.uf_change_rate_ml_min = rat[0]
-        self.UFChangeRateDiff = rtd[0]
+        self.uf_change_rate_diff = rtd[0]
+        self.uf_old_rate_ml_min = ort[0]
 
+    def handler_uf_change_confirm_response(self, message):
+        """
+        Handler for response from HD regarding UF change confirmation.
+
+        \param message:  response message from HD regarding confirmed ultrafiltration settings change.\n
+            BOOL Accepted \n
+            U32  RejectReason (if not accepted)
+            F32  UF Volume (mL) - converted to Liters \n
+            U32  treatment Time (min) \n
+            F32  UF Rate (mL/min) \n
+
+        \returns none
+        """
+        rsp = struct.unpack('i', bytearray(
+            message['message'][self.START_POS_UF_CNF_RSP_RESP:self.END_POS_UF_CNF_RSP_RESP]))
+        rea = struct.unpack('i', bytearray(
+            message['message'][self.START_POS_UF_CNF_RSP_REJECT_REASON:self.END_POS_UF_CNF_RSP_REJECT_REASON]))
+        vol = struct.unpack('f', bytearray(
+            message['message'][self.START_POS_UF_CNF_RSP_VOL:self.END_POS_UF_CNF_RSP_VOL]))
+        tim = struct.unpack('i', bytearray(
+            message['message'][self.START_POS_UF_CNF_RSP_TIME:self.END_POS_UF_CNF_RSP_TIME]))
+        rat = struct.unpack('f', bytearray(
+            message['message'][self.START_POS_UF_CNF_RSP_RATE:self.END_POS_UF_CNF_RSP_RATE]))
+
+        if rsp[0] == self.RESPONSE_REJECTED:
+            resp = False
+        else:
+            resp = True
+        self.uf_change_succeeded = resp
+        self.uf_change_reject_reason = rea[0]
+        self.uf_change_volume_ml = vol[0] / self.LITER_TO_ML_CONVERSION_FACTOR
+        self.uf_change_time_min = tim[0]
+        self.uf_change_rate_ml_min = rat[0]
+
     def cmd_ui_checkin_with_hd(self):
         """
         Constructs and sends the ui check-in message