How to add hero abilities to spellbook?

[FSK]

Looks like it can only use item and unit abilities, is that correct?

I can't start with item or unit abilities then convert in game with triggers for various reasons.

Thanks

 

[Warseeker]

Hold Shift+Enter then enter the hero ability rawcode (i.e : Blizzard = AHbz) You can find out the rawcode of an ability by pressing Ctrl+D.