Toggle pause script

Hi,

I've been using autoit for quite some years now and have mainly been lurking around the forums whenever I have had a problem. I've managed to get by through trial and error and I don't actually know very much about the program. I was wondering if I could get some help with my script.

My question is the following:

Is there a way to set a hotkey to pause my script but when I restart it, it begins from the beginning again rather than starting up where it paused?

For example.

Currently my script does.. ... pause at "c" >> unpause = starts at "d"

However I want it to do... ...   pause at "c" >> unpause = restarts at "a"

Here is what I am working with

;my script template

#requireadmin
    opt("SendKeyDownDelay", 200)
    $count = 0
Global $UnPaused
HotKeySet("`", "TogglePause")
HotKeySet("{ESC}", "Terminate")

;--------------------

While 1
    Sleep(10)
    ToolTip("Script is Paused",0,0)
WEnd

;--------------------

Func TogglePause()
    $UnPaused = NOT $UnPaused
    While $UnPaused

;---script goes here--
Send("a")
Send("b")
Send("c")
Send("d")

;--------------------

  WEnd
EndFunc

;--------------------

Func Terminate()
   Exit 0
EndFunc

Any help is greatly appreciated!

- Alex