Scripting unit's actions

[Borya]

Do you thinkg the AI will use spells through items then?

I gave one of my commanders Snake Ring (it allows to cast poison touch), put him in front, ordered to "attack closest", and tested in about 5 fights. He survived all of them, killed a lot of troops, but never used his Poison Touch.

[Jack_Trowell]

If you give your unit an order to "attack", you're telling him : don't was time casting spells, just attack

With this order the unit will neitheir cast spells nor fire ranged weapons.

You could give him as orders something like 'attack one turn' (to have him advance), maybe 2 times if the commander is slow or the ennemy is far away, and then you change him tocast spells.
If the commander is not a mage and has only the item spell available, it will cast it as often as possible. Note however that with ennemy in melee range there's a chance your commander will react and attack in melee sometimes instead of casting the spell. You can also just don't give any general order to the commander after the first (up to) 5
, and let you commander decide each round what to do.