How to make Max Health increase with Levels?

Hello!

I am trying to make the Max Health of a player increase as they level up. I've included the entire leaderboard script below, All of it works fine when I remove the Health portion of the script, but I'd really like to get that part functioning too. I've approached it several different ways, generally getting the output that "Health" or "Humanoid" or "plr" is not a valid part of Workspace.

Any advice would be much appreciated!

The problematic part of the script:

local Health = game.Workspace.plr.Health
local MaxHealth = game.Workspace.plr.Health * level.Value + 10

The entire leaderboard script:

game.Players.PlayerAdded:connect(function(plr)
	local stats = Instance.new('IntValue', plr)
	stats.Name = 'leaderstats'
	
local points = Instance.new('IntValue', stats) 
	points.Name = 'Points'
	points.Value = 0
local experience = Instance.new('IntValue', stats)
	experience.Name = 'EXP'
	experience.Value = 0
local level = Instance.new('IntValue', stats)
	level.Name = 'Level'
	level.Value = 0

-- The two lines below is where it breaks
local Health = game.Workspace.plr.Health
local MaxHealth = game.Workspace.plr.Health * level.Value + 10
-- The two lines above is where it breaks	
	

experience.Changed:connect(function()
    local required=(level.Value*70) -- Number reflects the EXP points needed to level up.
    if experience.Value >= required then
        level.Value=level.Value+1
        experience.Value=experience.Value-required
 			end


end)
end)	

Assuming your variables are all defined - we'd connect the setting of the humanoid's health continuously by setting a connection.

level.Changed:connect(function() MaxHealth = game.Workspace.plr.Health  * level.Value * 10 end)

You can then use the variable to set the player's health on another line.

If you want to use the same variables, you would have to replace it with:

local Health = game.plr.localPlayer.Humanoid.Health
local MaxHealth = game.plr.localPlayer.Humanoid.Health * level.Value + 10

I think this should work, since I've only done this for a couple of weeks, but I see many people do this. Try it out!