Using upgrades

I'm trying to implement upgrades in my map, but obviously they are not working.

What I am doing is, I created custom upgrades in the object editor, and gave my hero a dummy spell. The idea is that I want my hero to gain the upgrade when he puts a point into that dummy skill.

So I did the obvious - order hero to research upgrade when the hero learns a skill provided that skill is my dummy skill.

But it's not working.

What am I doing wrong?

Don't order to research the upgrade, set their level instantly using Player - Set upgrade level (I don't have the editor here, maybe it is tech level or something like that).

That works. Rep for you.