Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -ra3f3f5ca6fcb24a47bb3056878bb8ff9e3642fd2 -rc8f888698f6074086e1444c773aa2a863e7979b0
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision a3f3f5ca6fcb24a47bb3056878bb8ff9e3642fd2)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision c8f888698f6074086e1444c773aa2a863e7979b0)
@@ -876,6 +876,30 @@
         """
         self.cmd_set_treatment_adjust_ultrafiltration_state_response(EResponse.Rejected, vReason, vState)
 
+    def cmd_set_treatment_adjust_ultrafiltration_init_response(self, vAccepted, vReason, vVolume):
+        """
+        the ultrafiltration volume change response message setter/sender method
+
+        | MSG  | CAN ID | Box | Type   | Ack | Src | Dst | Description                       | #1:(U32)             | #2:(U32)           | #3:(F32)           
+        |:----:|:------:|:---:|:------:|:---:|:---:|:---:|:-----------:                      |:--:                  |:--:                |:--:                
+        |0x5000| 0x020  | 6   | Rsp    | Y   | HD  | UI  | Pre UF Volume Adjustment Response | \ref Data::mAccepted | \ref Data::mReason | \ref Data::mVolume 
+
+        :param vAccepted: (int) boolean accept/reject response
+        :param vReason: (int) rejection reason
+        :param vVolume: (float) Ultrafiltration Volume
+        :return: none
+        """
+
+        payload  = integer_to_bytearray(vAccepted)
+        payload += integer_to_bytearray(vReason)
+        payload += float_to_bytearray(vVolume)
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_to_ui_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_PRE_TREATMENT_UF_RESPONSE.value,
+                                              payload=payload)
+
+        self.can_interface.send(message, 0)
+
     def cmd_set_treatment_adjust_ultrafiltration_edit_response(self, vAccepted, vReason, vVolume, vDuration, vDurationDiff,
                                                                vRate, vRateDiff, vRateOld):
         """