Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r3765a2a0a45ddf65c99604f12ac635884ff8dc09 -ra480932829373ec2106eeece3eab672303590bb3
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 3765a2a0a45ddf65c99604f12ac635884ff8dc09)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision a480932829373ec2106eeece3eab672303590bb3)
@@ -229,7 +229,7 @@
             self.logger.error("Not all rejections are enums.")
             return False
 
-        payload = bytearray()
+        payload = integer_to_bytearray(0)
 
         for rejection in rejections:
             payload += integer_to_bytearray(rejection.value)
@@ -1027,8 +1027,10 @@
 
     def cmd_set_pressure_occlusion_data(self, arterial_prs: float, venous_prs: float, blood_pump_occlusion: int,
                                         pressure_state: int, art_min_limit: int, art_max_limit: int,
-                                        ven_min_limit: int, ven_max_limit: int, filtered_arterial_prs: float,
-                                        filtered_venous_prs : float) -> None:
+                                        ven_min_limit: int, ven_max_limit: int
+                                        , filtered_arterial_prs: float,
+                                        filtered_venous_prs : float
+                                        ) -> None:
         """
         the Pressure/Occlusion Data messages setter/sender method
 
@@ -1044,8 +1046,8 @@
         @param art_max_limit: (int) arterial maximum limit
         @param ven_min_limit: (int) venous minimum limit
         @param ven_max_limit: (int) venous maximum limit
-        @param filtered_arterial_prs: (float) filtered arterial pressure
-        @param filtered_venous_prs: (float) filtered venous pressure
+        # @param filtered_arterial_prs: (float) filtered arterial pressure
+        # @param filtered_venous_prs: (float) filtered venous pressure
         @return: none
         """
 
@@ -2009,6 +2011,38 @@
 
         self.can_interface.send(message, 0)
 
+    def cmd_send_confirm_post_tx_next(self, accepted: int, reason: int):
+        """
+        the HD response to the request from UI to continue after a post treatment review
+        @param accepted: boolean accepted or rejected
+        @param reason: the rejection reason
+        @return: None
+        """
+        payload = integer_to_bytearray(accepted)
+        payload += integer_to_bytearray(reason)
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_to_ui_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_POST_TX_NEXT_CMD_RESPONSE.value,
+                                              payload=payload)
+
+        self.can_interface.send(message, 0)
+        
+    def cmd_send_heparin_response(self, syringePumpVolumeDelivered: float, syringePumpVolumeRequired: float):
+        """
+        the HD response to the request from UI to continue after a post treatment review
+        @param accepted: boolean accepted or rejected
+        @param reason: the rejection reason
+        @return: None
+        """
+        payload = float_to_bytearray(syringePumpVolumeDelivered)
+        payload += float_to_bytearray(syringePumpVolumeRequired)
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_to_ui_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_HEPARIN_DATA.value,
+                                              payload=payload)
+
+        self.can_interface.send(message, 0)
+        
     # ------------------------------------------------ GENERAL MESSAGES ------------------------------------------------
 
     def cmd_send_hd_general_response(self, message_id: int, accepted: int, reason: int,