how to deal with leftover experience?

recently, I have been experimenting with this and haven't found a fix to stop it from repeatedly adding 10 experience since currentXP does not equal the maxXP.

So, how do I deal with this leftover experience I'm getting and how to stop it from exceeding the maxXP limit?

local StarterPlayer = game:GetService("StarterPlayer")

local currentXP = StarterPlayer.plrInfo.currentXP
local currentLevel = StarterPlayer.plrInfo.currentLevel
local maxXP = StarterPlayer.plrInfo.maxXP

touched = true
script.Parent.Touched:Connect(function()
	if touched == true then
	if currentXP.Value == maxXP.Value then
			currentXP.Value =0
			currentLevel.Value = currentLevel.Value + 1
		    maxXP.Value = maxXP.Value*1.5
		    touched = false
		    wait(.5)
		    touched = true
		else
	currentXP.Value = currentXP.Value + 10
	touched = false
	wait(.5)
	touched = true
	end
	end
	end)

example: I need 188 experience to go on to level 3 but I only get experience in increments of 10, how do I deal with the leftover experience I have?

--

bar gui code:

local StarterPlayer = game:GetService("StarterPlayer")

local currentXP = StarterPlayer.plrInfo.currentXP
local currentLevel = StarterPlayer.plrInfo.currentLevel
local maxXP = StarterPlayer.plrInfo.maxXP

local runService = game:GetService("RunService")

local xpBar = script.Parent.bar
local text = script.Parent.xpStatus

runService.Stepped:connect(function()
	text.Text = currentXP.Value.."/"..maxXP.Value.." (lv."..currentLevel.Value..")"
	xpBar.Size = UDim2.new((currentXP.Value / maxXP.Value) * 1,0,1,0)
end)