Patrice Garachon wrote: > > Today, I have tried to use PythonService.exe as Dll message. > If you use the 1001 or 1002 Id number, it doesn't works but if you use > 0x4000100 1 or 2 It works ? Yes - I believe this is the "severity" bit - ie, indicating if it is error, warning or info number 1001. Mark.