Custom Berserker Upgrade

I tried applying a custom 'berserker upgrade', but the unit just disappears from the production structure and the ones already available don't change. I've added the custom 'Berserker Upgrade' ability to the unit, gave it the upgrade, even added the Dependency equivalent. How can I fix this?

Also, I checked with the Orc Barracks and I see it has the Troll Berserker already in its units produced list, but when I add the equivalent of my unit which is supposed to recieve the custom berserker upgrade, it's already available for training without the research.

PS: apologies if I'm in the wrong section.

You need to disable the unit avaialability for your upgraded unit. either via the player settings or triggers.

The upgrade as such just chnages availablities for units. More can be seen on my kalimdor raiders entry via my sig, look for the ogre crusher and respective upgrades.

Okay, thnx for the advice :)