Combat: Attack 1 - Damage Upgrade Amount

[Edward]

I wanted my Cannon to receive an increase of + 25 damage per upgrade of Black Gun Powder.

However when Black Gun Powder is done, my damage only increases by 2.

The Object Editor Line:
Combat: Attack 1 - Damage Upgrade Amount = 25

does not work. In fact it is set to zero for almost all units by default, yet their attack damage is upgraded. So what does this line do? How do I change the upgrade amount?

 

[Bogrim]

I don't think upgrades actually use that field. Instead, look at the value in the upgrade's data fields.

 

[Wummi]

I think there's like a thing in the upgrades that says Increase attack by how many number of dice. That's what you want to change.