Fireball not working

Hello, I have this mob:


AngryMagma:
Type: MAGMA_CUBE
Display: '&6Nastvany &4&lMAGMAT'
Health: 200
Damage: 8
Options:
Size: 8
MovementSpeed: 0.1
PreventSlimeSplit: true
PreventOtherDrops: true
MaxCombatDistance: 30
Skills:
- skill{s=MagmaFire} @self 0.3

And in skills I have this:


MagmaFire:
Skills:
- message{m="<mob.name><&co> *efekt triggernut*!"} @PlayersInRadius{r=40}
-...

Fireball not working