Tryed making my game r6 and r15 compattiable but it won't get past the if statements?

So im trying to make my game r6 and r15 compattiable but i think i did something wrong with the if statements how do i fix this there is no error in the output

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(character)
		if character.Humanoid.RigType == "R15" then
			character.LeftFoot.Locked = true

		character.LeftHand.Locked = true
		character.LeftLowerArm.Locked = true
		character.LeftLowerLeg.Locked = true
		character.LeftUpperArm.Locked = true
		character.LeftUpperLeg.Locked = true
		character.LowerTorso.Locked = true
		character.RightFoot.Locked = true
		character.RightHand.Locked = true
		character.RightLowerArm.Locked = true
		character.RightLowerLeg.Locked = true
		character.RightUpperArm.Locked = true
		character.RightUpperLeg.Locked = true
		character.UpperTorso.Locked = true
		character.Head.Locked = true
		character.HumanoidRootPart.Locked = true
		elseif character.Humanoid.RigType == "R6" then
			character.Head.Locked = true
			character.HumanoidRootPart.Locked = true
			character.Torso.Locked = true
			character["Left Arm"].Locked = true
			character["Left Leg"].Locked = true
			character["Right Arm"].Locked = true
			character["Right Leg"].Locked = true
			
		end
	
		
	end)
end)

You could make your code a lot cleaner by doing this

game.Players.PlayerAdded:Connect(function(Player) --// Players entered Game, cought their index
   
   local Character = workspace:WaitForChild(Player.Name) --// Gets Character
  
   if (Character.Humanoid.RigType == Enum.HumanoidRigType.R15) then --// Check RigType
      
      local BodyParts = {}; --// Table of their body parts
      for _,BodyPart in pairs(Character:GetChildren()) do --// Gets body parts
         if BodyPart:IsA("BasePart") then
            table.insert(BodyParts, BodyPart)
         end
      end

      for i = 1,#BodyParts do
         BodyParts[i].Locked = true --// Locks them all
      end

   elseif (Character.Humanoid.RigType == Enum.HumanoidRigType.R6) then

      local BodyParts = {};
      for _,BodyPart in pairs(Character:GetChildren()) do
         if BodyPart:IsA("BasePart") then
            table.insert(BodyParts, BodyPart)
         end
      end

      for i = 1,#BodyParts do
         BodyParts[i].Locked = true
      end

   end

end)

Hope this works