Help with bounce code...

[Insane]

Hi i was wondering how would i make a opponent bounce of the ground from an attack? am trying to edit kyosuke by byakko Gen'Ei Breaker  Shadow Breaker move and i even tried adding the down.bounce code into his hitdef and made his fall.yvel -15.9 i wasnt sure it was suppose to be that negative but i just wanted to try it to see if it worked an it still dosent work .. here is the hitdef and theres another code concering the p2sate maybe it has somthing to do with it am clueless ???

[State 1500, 1]
type = HitDef
trigger1 = Anim = 1305
trigger1 = !MoveContact
attr = A, SA
damage = ceil((1+.01*(power>=1000)+.01*(power>=2000)+.03*(power>=3000)+.15*(life<=300)) * (90+10*var(4))),10
animtype = Hard
guardflag = HA
hitflag = MAF
priority  = 5-(Var(4)=1)+(Var(4)=4), Hit
getpower = 50,0
pausetime = 12,14
sparkno = s9020+(random%8)
guard.sparkno = s9041
sparkxy = -5, -40
hitsound = S5,2
guardsound = S6,0
ground.type = High
ground.slidetime = 12
ground.hittime  = 20
ground.velocity = 0,8
air.velocity = -4,8
fall = 1
fall.recover = 0
fall.envshake.time = 12
fall.envshake.ampl = -4
guard.velocity = -8
palfx.color=32
palfx.sinadd=10,30,60,8
palfx.mul=128,256,512
palfx.time=32

And heres the other code....

[State 1300, LightningHit]
type = Explod
trigger1 = MoveHit
anim = 1325
ID = 1325
pos = 0,-(floor(enemynear,pos Y))
postype = p2
sprpriority = 5
ownpal = 1
ignorehitpause = 1
persistent = 0
...


if someone can help me it will be much appreciated .

~Insane~