>>Yes we use a tempname function with the random generator function to ensure unique(well close to unique) idx name.
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>OK. This function may already be working correctly. But in case you want to review it, one thing you can do is use the sys(2015) function. Another option is to use a GUID. This latter option is guaranteed not to be repeated anywhere in the World, on machines with a network card, but if you use the hexadecimal representation of the GUID, it will create a filename 32 characters long.

Interesting approach. So you use the MAC address to create a unique filename.

Einar