Unicodes on Subscript and Superscript numerals

Is there a problem if I had the Subscript and Superscript unicodes to my .sups and .sinf numerals?
Is there a reason why Glyphs doesn’t do this automatically?

Many thanks!

Solved, I just saw this post https://glyphsapp.com/tutorials/superscript-and-subscript-figures that explains it.
Sorry to bother, best!