I have not had any problems with the function Substr(Sys(2015),3) the last 15 years, but I see that I may have been lucky. :-)

>BTW I assumed there is a need for 8.3 and a filename wouldn't start with a digit. I don't know where it's needed (was usefull in DOS days).
>PS: If you need a unique filename on a shared folder and 8.3 is not a problem then GUID is a better alternative.
>Cetin
>
>>Hehe.. I know. I had lived big troubles with that... The best way combine it with a unique number like user number which I use. I lock a record when a user enter the network and my temporary names begins with it's number..
>>
>>>Metin,
>>>IMHO substr(sys(2015),3) is not safe either (even if not shared) because it's time dependant and from 2007 3rd character would be a digit. What I used was something like this instead:
>>>
>>>stuff(sys(2015),9,0,'.')
>>>