gen 1 and 2 Rattata can learn Ice Beam via move tutor in Pokemon crystal

[superpkmn]

Hello I've just discovered that Rattata can learn ice beam via move tutor in crystal i know you cant directly teach it to rattata in gen 1 or 2 but it can learn it via the move tutor in pokemon crystal and you can also trade it to any gen 1 games because rattata existed in gen 1 and the move ice beam im hoping maybe this can be fixed in a future update thanks 

[Kaphotics]

18 hours ago, superpkmn said:

Rattata can learn ice beam via move tutor

No, it can't.

Rattata (Pokémon)/Generation II learnset - Bulbapedia, the community-driven Pokémon encyclopedia

pokecrystal/data/pokemon/base_stats/rattata.asm at bd983395006298e976ae1871ef092e87f3385506 · pret/pokecrystal