I am able to become a Jellyfish twice

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1

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!
    I want the GUI to only show up once

  2. What is the issue? Include screenshots / videos if possible!
    My Problem is that the remote event in the CheckExp function can be fired multiple times although theres a variable called gotLevel2 that should not allow this im really dumbfounded here and tried tooooo many things i hope you can help me

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local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local RepStorage = game:GetService("ReplicatedStorage")
local Fish = require(RepStorage.Fish)
local FishAbilitys = require(RepStorage.FishAbilitys)

local gotLevel2 = false
local gotLevel3 = false
local gotLevel4 = false
local gotLevel5 = false 

RepStorage.Evolution.Evolution1Remote.OnServerEvent:Connect(function(plr)
	local leaderstats = plr:FindFirstChild("leaderstats")
	local XP = leaderstats:FindFirstChild("XP")
	local Stamina = leaderstats:FindFirstChild("Stamina")
	
	if XP.Value >= 100 and gotLevel2 == true then
		local oldchar = game:GetService("StarterPlayer"):FindFirstChild("StarterCharacter")
		if oldchar then
			oldchar:Destroy()
		end

		local newchar = Fish.Level_2.Jellyfish.Model:Clone()
		newchar.Name = "StarterCharacter"
		newchar.Parent = game:GetService("StarterPlayer")

		plr:LoadCharacter(newchar)
		
		--gotLevel2 = true
		XP.Value = 0
		Stamina.Value = 100
	end
end)

local function CheckXp (XP,plr,Stamina)

	if XP.Value >= 100 and gotLevel2 == false then
		gotLevel2 = true	
		RepStorage.Evolution.Evolution1EnableGUI:FireClient(plr)

	elseif XP.Value >= 500 and not gotLevel3 then
		gotLevel3 = true

	elseif XP.Value >= 1500 and not gotLevel4 then
		gotLevel4 = true

	elseif XP.Value >= 5000 and not gotLevel5 then
		gotLevel5 = true

	end
end

Players.PlayerAdded:Connect(function(plr)
	
	local leaderstats = plr:WaitForChild("leaderstats")
	local XP = leaderstats:WaitForChild("XP")
	local Stamina = leaderstats:WaitForChild("Stamina")
	
	
	XP.Changed:Connect(function()
		CheckXp(XP,plr,Stamina)
	end)
	
	
	RunService.Heartbeat:Connect(function()

		if Stamina.Value > 100 then
			Stamina.Value = 100
		end

	end)
	
	
	plr.CharacterAdded:Connect(function(char)
		local hum = char:WaitForChild("Humanoid")
		
		
		hum.Died:Connect(function()

			--//reset vars
		 	gotLevel2 = false
			gotLevel3 = false
			gotLevel4 = false
			gotLevel5 = false
		end)
	end)
end)
``