Index: MainTreatmentData/loader.py
===================================================================
diff -u -r297ab9b42e421f80cbc5148cc7c03c0d0758822d -r9e10dc7774f5777b8067b969663bfe32c4289f74
--- MainTreatmentData/loader.py	(.../loader.py)	(revision 297ab9b42e421f80cbc5148cc7c03c0d0758822d)
+++ MainTreatmentData/loader.py	(.../loader.py)	(revision 9e10dc7774f5777b8067b969663bfe32c4289f74)
@@ -16,6 +16,7 @@
 # plugin specific
 from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
 from leahi_dialin.protocols       import CAN
+from leahi_dialin.utils           import conversions
 
 from leahi_dialin.common.td_defs  import TDOpModes
 from leahi_dialin.common.td_defs  import TDStandbyStates
@@ -105,9 +106,8 @@
         Called when the user requests to firmware from UI
         @return: None
         """
-        response = struct.unpack('i', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_1:MsgFieldPositions.END_POS_FIELD_1]))[0]
-        self.lbBolusStart .setText( str(response ) )
+        response = conversions.bytearray_to_integer( message['message'], MsgFieldPositions.START_POS_FIELD_1)
+        self.lbBolusStart .setText( str(response[0]) )
 
     @Slot()
     def _init_widgets(self):