First off, wait two days before posting another, separate post. Secondly, it's as simple as making a Custom ability based on the Human's Improved Lumber Harvesting ability. Take that custom ability, and change the field called:
"Data - Effect 1: Lumber Harvest Bonus"
To "Gold Harvest" The next two lines show the amounts of the upgrade.
"Data - Effect 1 - Lumber Harvast Bonus - Base:" (5)
"Data - Effect 1 - Lumber Harvast Bonus - Increment:" (5)
(These automatically change to Gold Harvest once you change the first one)
Those two mean that the upgrade (There's two levels of this upgrade, as defined below in that list) gives +5 Lumber gathering bonus per level. Level 1 you go from 10 to 15 (Or whatever it is. I haven't played a melee map in so many years I don't remember!)
All you have to do is change that one simple thing, then change:
"Stats - Race: Human"
to "Undead"
And then change the:
"Tech Tree Requirements"
to Halls of the Dead and Black Citadel (If you want it to behave exactly like the original ability). Then add it to whichever Undead building you want to add it to. I personally would add it to Graveyard, which I think is the equivalent (That's where ghouls can alternately return lumber to, right?), but it really doesn't matter too much which building you place it on. Just add it into the list of:
"Techtree - Researches Available"
and it should be available for usage.
Please test this out, and if you have any further questions, please don't be afraid to ask. If it doesn't work, and you did EXACTLY what I said, let me know, and I'll actually test this in a map (I didn't test it, cause I believe this should work).
GL
P.S. - This is all done in the Object Editor, under the "Upgrades" tab, until you go to add it to a building. Then you have to go to "Units" tab and go down to Undead, and then Building to add it to the building you wish.
