Not returning to function?

Well, it seems I never get it right when it comes to returning to functions, so I'd like for you, my friends, to help me remember this. Basically what this script is, is a item equip script, for a horror game engine/framework I'm working on. When you hit F, the currently equipped light source should be welded too your arm. I scripted the functions before the KeyDown event. It doesn't seem to work, so I know I didn't recall the function right. Can anyone tell me what I'd done wrong? Code:

repeat wait() until game.Players.LocalPlayer --This is basically a anti-bug line.
wait(1) --Not really needed.
UseableAmmo = {[1] = script.NumTorches, [2] = script.LanternOil, [3] = script.FlashlightBattery} --A table, for my values
print "Tables set"
NumTorches = UseableAmmo[1] .Value
LanternOil = UseableAmmo[2].Value
FlashlightBattery = UseableAmmo[3].Value --I might not actually need .Value
Using = script.Using
Mouse = game.Players.LocalPlayer:GetMouse() --We need this
print "Values set"
Torch = {"Torch", NumTorches} --More tables.
Lantern = {"Lantern",LanternOil}
Flashlight = {"Flashlight", FlashlightBattery}
print "Usable Light sources defined"
wait()
function GetItemUsing() --Basic, it tells us what item is equipped.
wait()
NowUsing = Using.Value
print ("Detected that your using "..NowUsing)

end

function EquippItem() --Item equipping function.
GetItemUsing() --So we know what item is being used.
if NumTorches.Value < 1 then --We cant have nothing to equip, and still equip something
NowUsing = "None"
print "Out of Torches"
Ocupied = true
script.Error.RunOut.Visible = true --Lets tell the player  that they have nothing now.
script.Error.RunOut:TweenPosition(UDim2.new(0.5,0,0.75,0),"Out","Quad",4)
for i=1, 60/4 do --Total Lazyness
script.Error.RunOut.TextTransparency = (script.Error.RunOut.TextTransparency + (60/4)/10) --Even Lazier
end
script.Error.RunOut.Visible = false
script.Error.RunOut.TextTransparency = 0
script.Error.RunOut.Position = UDim2.new(0.5,0,0.85,0)
Ocupied = false
elseif NumTorches > 1 then --If they have more than 1
if Ocupied == false then
if NowUsing == "None" then
print "Nothing to equip"
Ocupied = true
script.Error.RunOut.Visible = true
script.Error.RunOut:TweenPosition(UDim2.new(0.5,0,0.75,0),"Out","Quad",4)
for i=1, 60/4 do --Total Lazyness
script.Error.RunOut.TextTransparency = (script.Error.RunOut.TextTransparency + (60/4)/10) --Even Lazier
end
script.Error.RunOut.Visible = false
script.Error.RunOut.TextTransparency = 0
script.Error.RunOut.Position = UDim2.new(0.5,0,0.85,0)
Ocupied = false
elseif NowUsing == "Torch" then
TorchW = Instance.new("Weld") --Welding time
TorchW.Part0 = game.Players.LocalPlayer.Character.Torso
TorchMod = game.ReplicatedStorage.TorchModel:clone()
TorchW.Part1 = TorchMod
TorchW.Parent = TorchMod.Arm
TorchW.C0 = CFrame.new(-1,0,0)*CFrame.fromEulerAnglesXYZ(0,0,0)
--game.Players.LocalPlayer.CameraMode = "Classic" --debug
end
end 
end
end


function KeyDown(Key) --Key down.
local KeyPressed = Key:lower()
if KeyPressed == "f" then
if ItemEquipped == false then
EquippItem()
end
end
end

Mouse.KeyDown:connect(KeyDown)