If the file does not exist, it will appear in run.py File: False and a file will be created and modified with what you put in text! The message yes or yes has to be between 3 quotes because it is the ...

RunStart { // *Mantid* // *File Writer* // *Description* start_time : uint64; // Required // Optional // milliseconds since Unix epoch (1 Jan 1970) stop_time : uint64 ...