I set the following

#Health of the Dark Doppelganger
	# Default: 600.0
	# Range: 1.0 ~ 100000.0
	health = 6000.0

but the doppelganger only has 1024 hp

full config https://pastebin.com/uWUkGGfC

Which mod, what mc version?? What mod version? I need all the info for I do a lot of mods. Did you do a full restart did you try re generating your config and did you do a full restart after making changes. Won't happen in game/automatically. Must full restart game.

Yes I did a full restart
darkdoppelganger-3.1.5-1.21.1
no errors in latest.log

Other config options such as attack and hard mode work fine

here is modlist/mc version/neoforge info https://pastebin.com/V3jv2pFb

working on this now

tested myself, something in your pack is causing this. config is working for me!

", operation: "add_multiplied_total"}], base: 0.2d}, {id: "minecraft:generic.max_health", base: 60.0d},

[dark_doppelganger]
	#Health of the Dark Doppelganger
	# Default: 600.0
	# Range: 1.0 ~ 100000.0
	health = 60.0
	#Attack Damage of the Dark Doppelganger
	# Default: 10.0
	# Range: 1.0 ~ 100.0
	attack_damage = 20.0
	#Movement Speed of the Dark Doppelganger
	# Default: 0.2
	# Range: 0.1 ~ 1.0
	movement_speed = 0.2
	#Knockback Resistance of the Dark Doppelganger
	# Default: 0.6
	# Range: 0.0 ~ 1.0