custom auto-numbering sequence

I’d like my named auto-numbering streams (such as <$n:figure:myImage>) to follow a custom sequence such as 1002, 1004, 1006, … instead of the generic 1,2,3…

Can you help? I thought about trying to do the arithmetic using Compile Replacements, but that doesn’t seem to work since it runs before the numbers are generated.

Views appreciated.

Roger