Adding Armor/Attack Types

I'm making a TD and with the way I'm making it, it needs 9 attack and armor types, but WC3 doesn't have that many normally, so I can't just change the ones it has. How do I add more attack and armor types, if I can? (Ex. (If you don't know what I mean by attack/armor types) Piercing, Siege, Fortified, Small, Hero, etc.)

You cannot add more attack/defense types.

At least, not visually. You could trigger reduction systems, but that'd not be as nice as what you originally want.

Hmm... Alright, I guess I'll just double up some types. Thank you.