Need Help with Elemental Armorclass

[Phyres]

Hello
I am working on a map with 4 different armor typs; Fire Water Earth and Air. The Problem is that Elemental spells like Rain of Fire or Flamestrike should do 100% against the Fire Armor class, 50% against the Water Armor class, and so on. Frost nova should do 100% against the Water 50% aganst the earth Armor class...

I have no idea how to solve this problem. Please help me.

 

[UreDe4D]

if you want to have spells dealing damage you can only use triggerbased spells, because normal spells do full damage to all armor types. if you only use normal attacks then change the respective fields in gameplayconstants