Index: sources/canbus/MessageGlobals.h
===================================================================
diff -u -r7b34653589ba6e4f4705fb4026fcd9319c41c352 -r200398eaf784dd2965023151086ba1939d2eb746
--- sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision 7b34653589ba6e4f4705fb4026fcd9319c41c352)
+++ sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision 200398eaf784dd2965023151086ba1939d2eb746)
@@ -44,6 +44,10 @@
  *
  */
 const QHash<Gui::GuiActionType ,quint8> payloadLen {
+    // FixMe: This has to be move to each model.
+    // it has been observed that these length can only check the payload length is correct.
+    // but if the model still needs more the model will fail.
+    // so it is better to keep them next to each other to make sure they are in sync.
     // ----
     {Gui::GuiActionType::ID_PowerOff                                ,   1           },
     {Gui::GuiActionType::ID_ShuttingDown                            ,   0           },