Help making a unique Palace "BuildingClassOverride"

[Eltoshan]

So here is ACTUALLY what I am trying to do:
-I have my unique civilization
-I want melee and mounted units created in my capital to have the Jannisary's "PROMOTION_HEAL_IF_DESTROY_ENEMY"
-I don't want other civilizations to have this
-I don't want my other cities to have this

I figured the easiest way was to edit the Palace since it is unique to the Capital city.

Things I tried (however arguably I may have messed up on them somehow):
1. Basically copied the Civ 5 files for Krepost and edited in the Palace-specific stuff

Spoiler :

		<Row>
			<Type>BUILDING_THRONEROOM</Type>
			<BuildingClass>BUILDINGCLASS_PALACE</BuildingClass>
			<Cost>0</Cost>
			<Help>TXT_KEY_BUILDING_THRONEROOM_HELP</Help>
			<Description>TXT_KEY_BUILDING_THRONEROOM_DESC</Description>
			<Civilopedia>TXT_KEY_BUILDINGS_THRONEROOM_PEDIA</Civilopedia>
			<Strategy>TXT_KEY_BUILDINGS_THRONEROOM_STRATEGY</Strategy>
			<ArtDefineTag>ART_DEF_BUILDING_PALACE</ArtDefineTag>
			<TrainedFreePromotion>PROMOTION_HEAL_IF_DESTROY_ENEMY</TrainedFreePromotion>
			<Capital>true</Capital>
			<NukeImmune>true</NukeImmune>
			<Culture>1</Culture>
			<Defense>250</Defense>
			<MinAreaSize>-1</MinAreaSize>
			<NeverCapture>true</NeverCapture>
			<HurryCostModifier>25</HurryCostModifier>
			<IconAtlas>BW_ATLAS_1</IconAtlas>
			<PortraitIndex>61</PortraitIndex>
		</Row>

My Civilization XML file contained both FreeBuildingClass (listing Palace) and BuildingClassOverride (changing Palace to Throne Room).

Result: I started with no Palace in my capital

2. I tried making it into its own building class and simply trying to tell the game that the FreeBuildingClass was "BUILDINGCLASS_THRONEROOM" instead of the "BUILDINGCLASS_PALACE".

Result: Palace(not Throne Room) became an option for me to produce on turn 1.

3. I tried using "Where"-"Set" tags on the Palace without even adding a building.

Spoiler :

<Civilization_FreeBuildingClasses>
		<Update>
			<Where BuildingClassType="BUILDINGCLASS_PALACE"/>
			<Set TrainedFreePromotions="PROMOTION_HEAL_IF_DESTROY_ENEMY"/>
		</Update>
	</Civilization_FreeBuildingClasses>

Result: The same as the first time. Nothing appears.

I tried a BUNCH of other little things here and there on every "overhaul" and nothing happened. If I need to like my entire mod I'd be happy to. Thanks to anyone who is able to assist me!

 

[Eltoshan]

Nevermind, I figured it out.

 

[Krieghund]

I'd like to hear how you did it.