Custom Spell Help

[victorsuazo1991]

How can I get a unit to cast a custom spell? I can't find the way to do it since only the suggested x default appear. But what I want is that by reaching a region that unit casts a custom spell.

 

[Warseeker]

Depends on what you based your custom spell? For example : if it's based on Storm bolt then simply order the unit to cast storm bolt or if it's based on Flame strike then order the unit to cast flame strike, etc...