I think you are trying to make clear that you've tried to use the grayed out Customize Object option in the editor. You can't mod objects with the editor. You have to modify quite a lot of files to make a new unit; if you want to just change a unit's stat, use Modify Protounit.
A condition is not a trigger.
An effect is not a trigger.
A trigger is a combination of one or more conditions and effects.
It causes effects to happen if and when conditions are met.
Period.