Nope. Tried that. Tried DIR in a command window too. But I never specified even what version of Windows I was running, so I’m a little unclear why you’re trying to troubleshoot a problem I was experiencing on windows nearly a decade ago. I guess this is what be mansplained too feels like.
But you can represent up to 999 lab techs with only 1 more digit. Or 946 lab techs with just 2 alpha numeric characters. Heck just 2 letters gets you 676 combinations. About 17,000 combos with 3 letters and more than 40,000 if you use 3 alphanumeric characters.