Why does it run with InputEnded and not InputBegan ?

It starts charging the bar when you stop holding the Q key. Not when it's being held. Why ?

Server Sided >

local rep = game:GetService("ReplicatedStorage")

local remfunc = Instance.new("RemoteFunction", rep)
remfunc.Name = "NenFunction"




function remfunc.OnServerInvoke(Player, Request)

   if Request == "Began" then
       local char = Player.Character
       local humroot = char.HumanoidRootPart

       local plrgui = Player.PlayerGui
       local general = plrgui.GeneralScreen
       local nenstatus = general.NenStatus
       local expstatus = general.ExpStatus
       local MaxNen = nenstatus.MaxNen
       local Nen = nenstatus.Nen

       local nenlabel = nenstatus.NenBar

           for i = 1, MaxNen.Value do
               wait()
               nenlabel.Size = UDim2.new((Nen.Value+i/MaxNen.Value), 0, 1, 0)



            end



        else if Request == "Ended" then

            local char = Player.Character
            local plrgui = Player.PlayerGui
            local general = plrgui.GeneralScreen
            local nenstatus = general.NenStatus
            local expstatus = general.ExpStatus
            local MaxNen = nenstatus.MaxNen
            local Nen = nenstatus.Nen

            local nenlabel = nenstatus.NenBar

            nenlabel.Size = UDim2.new((Nen.Value/MaxNen.Value),0,1,0)

        end
    end
end

Client

local player = game.Players.LocalPlayer

repeat wait() until player.Character

local char = player.Character
local hum = char:WaitForChild("Humanoid")
local humroot  = char:WaitForChild("HumanoidRootPart")

local UIS = game:GetService("UserInputService")
local IB = UIS.InputBegan
local IE = UIS.InputEnded


-- // Remote Function


local rep = game:GetService("ReplicatedStorage")
local remfunc = rep:WaitForChild("Ten")
local remfunc2 = rep:WaitForChild("NenFunction")

-- // Remote Function

local deb = true
local playing = false

IB:connect(function(inputObject, gameProcessedEvent)
if inputObject.KeyCode == Enum.KeyCode.Q then
      if deb then
         deb = false
         playing = true
         remfunc:InvokeServer("Began")
         remfunc2:InvokeServer("Began")
         repeat wait() until not playing
         deb = true
      end
   end
end)


IE:connect(function(inputObject, gameProcessedEvent)
   if inputObject.KeyCode == Enum.KeyCode.Q then
      wait()
      playing = false
      remfunc:InvokeServer("Ended")
      remfunc2:InvokeServer("Ended")
   end
end)