How have control UP and down in Lyra . In swim and fly state ?

Hello

In the base FPS project UP and down are already implemented movement and character can fly/swim automatically in zero G/water .
that is not the case of Lyra. it just move 2D

i would like to have this control in Lyra

Is there a tutorial about that ?
found tutorial to swim but that a flat swim not dive. Found tutorial to add some GAS but that not some move . But cannot found any tutorial to add movement (i supposed it s kind of similar to add gas and make it active in a zon)

I already make a zone and my player is flying and detected has so. I suppose i can also just drop water in lvl and lyra will detect it.
i made a new IA_move that i called IA_fly and have up and down named imput .
i created new sub tag of move that i called InputTagMovefly (maybe should not be a subclass of move ? )

but now how i actually make my binding do something and how i make my IA_fly activated in a fly zone or a swim zone ?

i couldn’t found any tutorial

if you have a link or explanation thanks
i m really beginner