[Scripting Question] Problem with some move animation

Hi, when moves such as Fly, Dig or Bounce are used, the Pokèmon sprite doesn't change graphic. Since I edited many files while working on my game, I don't know if this is by default or they should work like they do in real games, what should I do?

Of you mean dissapearing, then that should not happen in vanilla essentials

Is there any way to make it happen?

Pokémon Reborn did that. Download their game and check their script. Also read their FAQs if you copy some code from there.