SETSTAMP(filename,newdate,newtime)if SETSTAMP(filename,newdate,newtime) then   begin      ........        endto see if the file is locked. and wait till it is released. but in a sense you are making the file be your semaphore.I would rather use events, send email, create separate files for each connection.afterward at the end of the have a processing that will combine the files. 
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