I haven't done much SQL, and I'm trying to make early siege weapons not require iron. I tried this: UPDATE Unit_ResourceQuantityRequirements SET Cost = 0 WHERE UnitType IN ("UNIT_CATAPULT","UNIT_TREBUCHET"); However, Iron is still listed as a req in the civilopedia. Which I'm guessing means it either is listed still as a req, but a req of 0, or I just typed it up wrong. Can I just "take out" that table entry for SQL instead of changing the costs? I read Kael's guide and I can't figure out how to do it from there.