How to store a highest variable and add to leaderboard stat?

So, I've got a game where you fling yourself off a ramp. I've got some code to detect magnitude and put it into a leaderstat, but I want to find the highest magnitude before death, and then add that to the leaderstat. Sort of like a currency system. Below is the code for the magnitude stat that I currently have.

local Players = game:GetService("Players")

local point = workspace.Wedge

local function find_distance(speed: number, character: Model)
    local player = Players:GetPlayerFromCharacter(character)
    local root_part = character:WaitForChild("HumanoidRootPart")

    local leaderstats = player:WaitForChild("leaderstats")
    local magnitude = leaderstats.Magnitude

    magnitude.Value = (root_part.Position - point.Position).Magnitude
end

local function character_added(character)
    print(character.ClassName)
    local humanoid = character:WaitForChild("Humanoid")

    humanoid.Running:Connect(function(speed)
        find_distance(speed, character)
    end)
end

local function player_added(player: Player)
    player.CharacterAdded:Connect(character_added)

    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player 

    local magnitude = Instance.new("IntValue")
    magnitude.Name = "Magnitude"
    magnitude.Parent = leaderstats
end

Players.PlayerAdded:Connect(player_added)