Is it possible to make a unit's HP down to anything just not full i.e. 2/30? If so how? Has anyone (Aside from the folks at Prima) written an explanation on how things work in the scenario editor?
Simply use the "Damage Object" trigger.
What do I type in the quantity box to lower it?
If you want to damage the object (NOT lower the maximum HP of the unit), then simply type in the quantity you want removed. If you want 2/30, simply type 28 into the box.