How to make fall damage script?

You need to check the player's falling speed with the "WalkSpeed" field of the player, then from there you increase by 1 a field called fallDamage, from that you can remove health in base the fallDamage, let's do it! CREATE A LOCALSCRIPT!

local fallDamage = 0 -- We define the amount of the damage when a player falls

function takeDamageFromFall(part)
    -- If your falling speed is higher than 30 (the player's default one is 16)
    if player.WalkSpeed > 30 then
        -- While falling the walkspeed will be increased by 1 each tick (20 milliseconds)
        while player.WalkSpeed == player.WalkSpeed + 1 do
            -- As the walkspeed increases, the fallDamage increases too by 1
            fallDamage = fallDamage + 1
        end
    end
end

-- If the player touched something in the Workspace
for _, part in pairs(game.Workspace:GetChildren()) do
    -- We will remove the amount of health as same as the fallDamage's one by dividing it by 2
    part.Touched:Connect(takeDamageFromFall)
    game.Players.LocalPlayer.Health = game.Players.LocalPlayer.Health - (fallDamage / 2)
end

I did it while I was hurrying. Tell me if it doesn't work, when I arrive I'll take cares about the problems and resolve it. Ps: you can change the dividing amount if you take less/more damage than what you thought!