Index: sources/canbus/messageinterpreter.cpp
===================================================================
diff -u -r5963f00ffd2c557d3ae06a5deea05032a3a3bd68 -r8c5f54b53a19dd29a3b9731d8ec1bf3d1ba3be62
--- sources/canbus/messageinterpreter.cpp	(.../messageinterpreter.cpp)	(revision 5963f00ffd2c557d3ae06a5deea05032a3a3bd68)
+++ sources/canbus/messageinterpreter.cpp	(.../messageinterpreter.cpp)	(revision 8c5f54b53a19dd29a3b9731d8ec1bf3d1ba3be62)
@@ -136,7 +136,7 @@
     }
 
     case GuiActionType::BloodFlow:  {
-        types::U32 mFlowSetPoint    ;
+        types::S32 mFlowSetPoint    ;
         types::F32 mMeasuredFlow    ;
         types::F32 mRotorSpeed      ;
         types::F32 mMotorSpeed      ;
@@ -211,7 +211,7 @@
  * \details This is the method which interprets the Blood Flow message data in vMessage of type Message
  *          to its elements of data.
  * \param   vMessage         - The vMessage of type Message which contains all the data, require to be interpreted.
- * \param   vFlowSetPoint    - Flow Set Point           value of type unsigned int extracted out.
+ * \param   vFlowSetPoint    - Flow Set Point           value of type signed int   extracted out.
  * \param   vMeasuredFlow    - Measured Flow            value of type float        extracted out
  * \param   vRotorSpeed      - Rotor Speed              value of type float        extracted out
  * \param   vMotorSpeed      - Motor Speed              value of type float        extracted out
@@ -222,7 +222,7 @@
  */
 bool MessageInterpreter::getBloodFlowData(
         const Message &vMessage     ,
-        types::U32 &vFlowSetPoint   ,
+        types::S32 &vFlowSetPoint   ,
         types::F32 &vMeasuredFlow   , types::F32 &vRotorSpeed       , types::F32 &vMotorSpeed,
         types::F32 &vMotorCtlSpeed  , types::F32 &vMotorCtlCurrent  , types::F32 &vPWMDtCycle)
 {
Index: sources/gui/qml/pages/TreatmentStart.qml
===================================================================
diff -u -r2fdeb1c461dde1b7b8bffcc5b814736190f98988 -r8c5f54b53a19dd29a3b9731d8ec1bf3d1ba3be62
--- sources/gui/qml/pages/TreatmentStart.qml	(.../TreatmentStart.qml)	(revision 2fdeb1c461dde1b7b8bffcc5b814736190f98988)
+++ sources/gui/qml/pages/TreatmentStart.qml	(.../TreatmentStart.qml)	(revision 8c5f54b53a19dd29a3b9731d8ec1bf3d1ba3be62)
@@ -47,7 +47,7 @@
         topPadding: 100
         leftPadding: 10
         Text {
-            id: _U32
+            id: _S32
             text: qsTr("")
             width: 250
             horizontalAlignment: Text.AlignRight
@@ -110,7 +110,7 @@
             switch(vAction) {
             case GuiActions.BloodFlow:
                 //console.debug(vData)
-                _U32  .text = vData[GuiActions.BloodFlow_FlowSetPoint   ];
+                _S32  .text = vData[GuiActions.BloodFlow_FlowSetPoint   ];
                 _F32_1.text = vData[GuiActions.BloodFlow_MeasuredFlow   ].toFixed(2);
                 _F32_2.text = vData[GuiActions.BloodFlow_RotorSpeed     ].toFixed(2);
                 _F32_3.text = vData[GuiActions.BloodFlow_MotorSpeed     ].toFixed(2);