Why am I not getting levels when I hit a certain amount of EXP?

I made a script that looks like this:

if player.leaderstats.EXP.Value >= 1500 then player.leaderstats.Level.Value = player.leaderstats.Level.Value + 1 player.leaderstats.EXP.Value = player.leaderstats.EXP.Value - 1500 end

I made it so when the player's exp is greater than or equal to 1500, you increase by a level, but for some reason I am just piling up EXP without it turning into levels, I even tried to fix it but it ended up just deleting all my EXP and keeping my level at 1.

I will give you my leaderstats script if that will help you answer my question in any way, shape or form:

local dataStores = game:GetService("DataStoreService"):GetDataStore("LeaderstatsDataStore")

local defaultCash = 0 local defaultEXP = 0 local defaultLevel = 1 local playersLeft = 0

game.Players.PlayerAdded:Connect(function(player)

playersLeft = playersLeft + 1

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

local Coins = Instance.new("IntValue")
Coins.Name = "Coins"
Coins.Value = 0
Coins.Parent = leaderstats

local EXP = Instance.new("IntValue")
EXP.Name = "EXP"
EXP.Value = 0
EXP.Parent = leaderstats

local Level = Instance.new("IntValue")
Level.Name = "Level"
Level.Value = 1
Level.Parent = leaderstats

local playerData = Instance.new("Folder")
playerData.Name = player.Name
playerData.Parent = game.ServerStorage.PlayerData

local equipped = Instance.new("StringValue")
equipped.Name = "Equipped"
equipped.Parent = playerData

local inventory = Instance.new("Folder")
inventory.Name = "Inventory"
inventory.Parent = playerData

if player.leaderstats.EXP.Value >= 1500 then player.leaderstats.Level.Value = player.leaderstats.Level.Value + 1 player.leaderstats.EXP.Value = player.leaderstats.EXP.Value - 1500 end