R6 dummy works but not my R15 dummy

Hi, i’m having troubles with my R15 dummy, so basically i want the dummy to have my character appearance but with a position that i defined before running the game



As you can see, the two dummies have my character appearance but the R15 one changed my the position of the head, i really dont know what’s happening and i would really appreciate to get your help!

I forgot to send the script but i don’t think it’s from it

local dummy = script.Parent
local appearanceModel = game.Players:GetHumanoidDescriptionFromUserId(421310257)


dummy.Humanoid:ApplyDescription(appearanceModel)