Suminig skill

[Bajker]

Hi.

i'm trying to create more skill levels for Heroes who have Sumoning skills (archmage, Crypt lod, Beastmaster)

I've createdn new unit (by copying lets say Water Elemental Lvl 3), changed his stats ,...

Now when i'm expanding skill's text it displays HP corectly, but at damage i says 0 - 0 damage.

Ho what's a secret of damage displaying on sumoning skills ?

***
update, today i played with Crypt Lord's Beetles and if i changed original tree betles damage, it doesn't change damage in skill description.

Any ideas.