Christian,

For complete safety, you'd want to handle both a new file and an append, so something like this does the trick:

LOCAL lnFileHandle,lcFileSpec
lcFileSpec = "X:\SomeDir\Log.txt"

IF FILE(lcFileSpec)
  lnFileHandle = FOPEN(lcFileSpec,2)  &&--Buffered Read/Write
  =FSEEK(lnFileHandle,0,2)   &&--Move zero positions from EOF
ELSE
  lnFileHandle = FCREATE(lcFileSpec)
ENDIF

DO WHILE MyLoggingCondition
  =FPUTS(lnFileHandle,"My Log text")
ENDDO

=FCLOSE(lnFileHandle)

The trouble with text log files like this is that they can't be shared, so the approach you take has to allow for that.

Also check out STRTOFILE() and FILETOSTR(), it's good to be aware of these before you set your approach in stone, they may be useful.

Hope this helps.

>Hello,
>I want to create a error log file, but I don't know how to write to a file without loosing the existing text.
>Is there a easy way to write "additive" to file?
>Thanks for your help!