masteroforionconquerthestars Can't change ship hologram

[Skrettle]

here is ironclad in shiphulltypes,yaml in the 5x mod

- key: hull_ironclad

name: HULL_IRONCLAD_NAME

description: SHIP_TYPE_IRONCLAD_DESCRIPTION

cost: 10

space: 110

hp: 230

detectionRange: 0.5

tacticalHPIcon: ContentPrefabs/Tactical/HealthBarIcons/destroyer.png

icon: assets/ships/%civ%/%type%/ship_destroyer.png

hullScale: 1

hullPrefab: /ContentPrefabs/FleetIconsStarSystem/%civ%/fleeticon_race_%civ%_destroyer

hologram: /ContentPrefabs/Tactical/Holographic_Ships/%civ%/hologram_%civ%_destroyer_b.prefab

shipDesignScale: 1.8

hullClass: 2

introSlot: destroyer

tacticalLong: 1.0

tacticalWide: 0.5

tacticalTall: 0.25

tacticalVisualScale: 2

tacticalTriggerCooldown: 0.17

acceleration: 6

angularAcceleration: 1.0

baseDriveVelocity: 1.75

bestDriveVelocity: 3.5

maxVelocity: 4.5

maxAngularVelocity: 1.5

velocityFriction: 0.02

angularFriction: 0.05

flagType: destroyer

flagPriority: 4

specialSlots: 4

weaponSlots: 4

fightersGroups: 1

fleetSupportCost: 7

maxShipsProperty: maxShipsHullDestroyer

allowMassProduction: true

allowedShipDesign: true

CPAffectedByTechAch: true

I tried changing the hologram to a custom asset in the ucp folder. It didn't work so I thought I didn't set up the prefab correctly, but when I tried replacing it with an asset already in game

hologram: /ContentPrefabs/Tactical/Holographic_Ships/%civ%/hologram_%civ%_destroyer_b.prefab

to

hologram: /ContentPrefabs/Tactical/Holographic_Ships/%civ%/hologram_%civ%_destroyer.prefab

It still displays the destroyer b asset no matter what? Is this caused by some other yaml file?