Undo upgrades?

[Danis[h]]

Hello everyone. I have been trying to create a melee map where I can type "Remake" into the chat field and it will "reset the units and mineral counts, so as to practise opening builds more easily without constantly having to re-create games.

My trigger works okay, however I have discovered a small oversight: It does not reset any upgrades the players have researched, be that gateway or +1 attack.

So my question is: How do I, with triggers, reset the upgrades research for any given player?

 

[Terrabull]

There is a trigger called "Set Upgrade Level for player."
Set this to 0 and it acts as if the upgrade was never researched.