Button API return attempt to call nil

So Im trying to build a button API to use for my CC projects, I found one that Direwolf20 made and edited it to try and make it work but whenever I call the API and try to use it it returns nil.

Here's the API:

local Button = {}
local FillColor = colors.cyan
local ActiveColor = colors.blue
local TextColor = colors.white
function SetTable(name, func, x, y, width, height)
Button[name] = {}
Button[name]["Func"] = func
Button[name]["Active"] = false
Button[name]["X"] = x
Button[name]["Y"] = y
Button[name]["Width"] = width
Button[name]["Height"] = height
end
function ClearTable()
Button = {}
end
function SetFillColor(color)
if (colors.combine(color,color)) then
  FillColor = color
end
end
function SetTextColor(color)
if (colors.combine(color,color)) then
  TextColor = color
end
end
function DrawButton(text,color,bData)
term.setBackgroundColor(color)
term.setTextColor(TextColor)

local textCenter = string.len(text)/2
local yCenter = bData["Y"]+bData["Height"]/2+1
local xCenter = bData["X"]+bData["Width"]/2-textCenter-1
for y = bData["Y"],bData["Height"] do
  term.setCursorPos(bData["X"],y)
  if y == yCenter then
   for x = 0, bData["X"]+bData["Width"]-textCenter-1 do
	if x==xCenter then
	 term.write(text)
	else
	 term.write(" ")
	end
   end
  else
   for i = bData["X"],bData["Width"] do
	term.write(" ")
   end
  end
end
end
function DrawtoScreen()
for name,data in ipairs(Button) do
  local on = data["Active"]
  if on == true then
   FillColor = FillColor
  else
   FillColor = ActiveColor
  end
  DrawButton(name,FillColor,data)
end
end
function ToggleButton(name)
Button[name]["Active"] = not Button[name]["Active"]
DrawtoScreen()
end
function PressButton(name)
ToggleButton(name)
DrawtoScreen()
sleep(0.15)
ToggleButton(name)
DrawtoScreen()
end
function GetClick()
local event,side,x,y = os.pullEvent("mouse_click")
for name,data in ipairs(Button) do
  if x >= data["X"] and x <= data["Width"] and y >= data["Y"] and y <= data["Height"] then
   data["Func"]()
   return true
  end
end
end

and here is me trying to use it:

--Desktop
os.loadAPI("Button")
slc = 0
titleBarColor = 256
titleBarTextColor = 32768
function titleBar()
term.setCursorPos(1,1)
term.setBackgroundColor(titleBarColor)
term.setTextColor(titleBarTextColor)
term.clearLine()
titleBarButtons()
end
function start()
return true
end
function drawDesktop()
term.clear()
titleBar()
Button.SetTable("Name", start, 2, 2, 10, 4)
Button.DrawtoScreen()
end
drawDesktop()

Please Help!

Can you give the entire error message so we can see where it does that?

You try to call titleBarButtons but you did not declare this function.

As far as I can see, there is nothing wrong with your API. In your desktop program however, you try to call titleBarButtons(), a function you haven't defined. Also as a sidenot: next time, please indent your functions to, and indent with the same space on all places.

AgisTheTekky, on 29 March 2016 - 02:15 PM said:

As far as I can see, there is nothing wrong with your API. In your desktop program however, you try to call titleBarButtons(), a function you haven't defined. Also as a sidenot: next time, please indent your functions to, and indent with the same space on all places.

Okay Thank you so Much! :)/>