I'm on windows, following this guide: https://github.com/flutter/flutter/wiki/The-flutter-tool

If only uncommented one of these lines, I got an error :
REM SET FLUTTER_TOOL_ARGS="--checked %FLUTTER_TOOL_ARGS%"
Error: Error when reading '': The system cannot find the path specified.

REM SET FLUTTER_TOOL_ARGS="%FLUTTER_TOOL_ARGS% --observe=65432"
Error: Error when reading '%20--observe=65432': The system cannot find the file specified.

Is there any other thing I need to do to debug locally "my own" flutter cli ?