I'm using upgrades as a weapon being equiped, and I am not sure what conditions to add to make it so that they can't just reequip and get more upgrades. Any Ideas?

Have running deathcount that counts the number of upgrades, adding to it every time they equip a new weapon. You can use a switch to determine if the weapon has ever been equipped.

nice idea

Are you just trying to prevent a user from equiping, say a +4 str/stam leather belt and then choosing to equip it again, even though they are already wearing it? IE stacking the effects even though its a single item.

Yes Elvang thats the problem, but its fixed with a switch

I just have two triggers, one will equip normal, the other will give 8 gas if the switch is clear