Logical subtlety ?

../...
Func My_WM_COMMAND($hWnd, $imsg, $iwParam, $ilParam)

../...

Case GUICtrlGetHandle($hSearch_Medecin)

     If GUICtrlRead($hSearch_Medecin) <> $vInitial_Input[4]  Then
          $bChange[4] = True
          ConsoleWrite("$hSearch_Medecin : " &  GUICtrlRead($hSearch_Medecin)  & "      $vInitial_Input[4] : " &  $vInitial_Input[4]   & @LF)
     Else
          $bChange[4] = False
     EndIf

Result on the console :

$hSearch_Medecin : Puthroste Jean-Luc    -   Paris      $vInitial_Input[4] : Puthroste Jean-Luc   -   Paris