Need trigger help for upgrading!

[c0rnbread]

Hey, I'm using Scmdraft 2.0 and I'm trying to make a trigger that orders the computer to research an upgrade like Zerg Carapace for example.

In my map I have it so every 2 minutes a group of zerglings spawn, and I'm trying to make it so their damage and armor gets upgraded once. So on like wave 48, the zerglings would have +48 bonus damage and armor.

Please help!

[Lavarinth]

That's more of an AI feature, than a trigger, it's not actually possible within the editor, to my knowledge.