See http://fox.wikis.com/wc.dll?Wiki~GUIDGenerationCode~VFP

>Anyone have the function that will guarantee a unique number?
>The test has to create 2 different numbers in a single line,
>for example: ?str(seconds(),11,4)+str(seconds(),11,4) fails the test.
>The true result needs to be a number [so sys(2015) in a no-go], type casting is used only for the test.