Math.Random not giving a value?

Ok. I tried to make a script where there's a math.random that gives you a certain value if you get a certain number.

local Backpack = game.Players.LocalPlayer:WaitForChild("Backpack")
local playerquirk = Backpack:WaitForChild("Quirk")
local quirk = math.random(1,10)

if playerquirk.Value == "None" then
game.Players.LocalPlayer.PlayerGui.GiveQuirk.PageOne.Quirk.TextButton.MouseButton1Down:Connect(function()
    if quirk == 1 then 
	  playerquirk.Value = "WarpGate"
	elseif quirk == 2 then
		playerquirk.Value = "Invisibility"
    elseif quirk == 3 then
	    playerquirk.Value = "Invisibility"
    elseif quirk == 4 then
	    playerquirk.Value = "HHHC"
    elseif quirk == 4 then
	    playerquirk.Value = "Erasure"
    elseif quirk == 5 then
	    playerquirk.Value = "Invisibility"
    elseif quirk == 6 then
	    playerquirk.Value = "WarpGate"
	elseif quirk == 7 then
	    playerquirk.Value = "HHHC"
    elseif quirk == 8 then
	    playerquirk.Value = "Erasure"
    elseif quirk == 9 then
	    playerquirk.Value = "Invisibility"
	elseif quirk == 10 then
	    playerquirk.Value = "WarpGate" 
    end
 	script.Parent.Visible = false
    script.Parent.Parent.Text = playerquirk.Value
    wait(1.5)
    game.Players.LocalPlayer.PlayerGui.GiveQuirk.PageOne.Visible = false
    game.Players.LocalPlayer.PlayerGui.GiveQuirk.PageTwo.Visible = false
    game.Players.LocalPlayer.Character.Humanoid.Health = 0
end)
end

NOT WORKING THOUGH! Help?

Computers cant always make random numbers, they always go off of a Puesdo which means its a pattern of numbers. So in lua there's something called Math.randomseed() which generates a new Puesdo depending on the number you put in. So if you do Math.randomseed(tick()) there will always be a random number due to tick() being changed every second. Also as well the first number in math.random is always the same number. To fix this issue write these 2 lines on the top of every script that uses math.random!

math.randomseed(tick()) --to generate a new puesdo
math.random() -- to remove the first number that is always then same

--Write the rest of your script