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,'.')

for a unique (local) filename. Or if would use a substr then:

'_'+substr(sys(2015),4) for a relatively short life cycled temp file.
Cetin

>I think so you right, but look that thread gone another way and fallin to sys(3)... :))))
>
>In Turkey we says: "A maniac (it's me now..hehe...)throws a stone to a well, amd thousand intelligent can't get out..."
>
>
>>>>SYS(2015) is not safe either, SUBSTR(SYS(2015)3) is safe AFAIK.
>>>
>>>Why?
>>
>>To be honest, I am not sure. It may be for compatibility with old DOS machines, or Novell servers which are not configured to handle long file names.