Save Screenshot to a Folder [VS] (working)

-- [screenie] (name given to the definition script)
-- saves a png screenshot if a path is specified else saves screenshot to be used for next save game image!
-- syntax: "createScreenshot(path)" or "createScreenshot(path, {flags=1, clear = true|false})"
-- ref: http://wiki.visionaire2d.net/index.php?title=CreateScreenshot

-- declare an incrementing variable (increment the variable by 1 with "count = count +1")
local count = 0

-- check if any screenshots already exist + set count value
function get_screen_amt()
 local filename = 'screen_' .. count .. '.png'
 local f = io.open('screenshots/' .. filename, 'r')
 -- * --
 if f then
  count = count +1
  check_cond() -- loops the query until file does not exist!
  f:close()
 else
  if count == 1 then local screen_amt = count -1
   print('-- * --')
   print('there are currently ' .. screen_amt  .. ' saved screenshots!')
   print('next screenshot will be screen_' .. count .. '.png')
  end
  if count > 1 then local screen_amt = count +1
   print('-- * --')
   print('there are currently ' .. screen_amt  .. ' saved screenshots!')
   print('next screenshot will be screen_' .. count .. '.png')
  end
 end
end

-- execute this in "Game properties" > "At begin  start following action" > "Start Action" -- starts loop to check if any screenshots exist & returns amount!
function check_cond()
  get_screen_amt()
end

-- saves a png screenshot to the screenshot folder with a numer amended to the end based on current count value!
function save_screenie_to_path()
local filename = 'screen_' .. count .. '.png'
  createScreenshot('screenshots/' .. filename)
  print(filename .. ' has been saved to the screenshots folder!')
  count = count +1
end