Execute Console Command[ Shot ] with alternative screenshot filenames?

When using Execute_Console_Command[ Shot ] to take a standard screenshot in a packaged exe,
is it possible to use a filename other than ScreenShot0000x?
(without editing/recompiling engine source code!)

Ideally, I would like to set my own filename, e.g., job_aa_scr_0000x

I suspect that it isn’t possible (I found no suggestion in docs) but wanted to be sure there wasn’t an undocumented trick for using a different filename at runtime.