Autohotkey `1 key sequence

In MSword I would like to set

`1

to be a key sequence to trigger a script but I also have other scripts in MSword with the hotkeys

1

and key sequence

11    ; (one pressed twice fast)

the code goes like this

; The following hotkeys work only if MS-WORD is the active window:
#If WinActive("ahk_exe WINWORD.EXE")    ; (1)

1::
if 1_presses > 0
{
    1_presses += 1
    SetTimer Key1, 300
    return
}
1_presses = 1
SetTimer Key1, 300
return

Key1:
SetTimer Key1, off
if 1_presses = 2
  SendInput, BYE
else
  SendInput, HELLOW
1_presses = 0
return

How can I set the `1 keysequence trigger without interfere with the other hotkeys???

Thanks Advanced.

Answer

#If WinActive("ahk_exe WINWORD.EXE") 

    ; SC029 is the scancode of the key "`"

    ; SC029::
    ; KeyWait, SC029
    ; return

    SC029 Up::
    Send {SC029}
    return

    ; press 1 while you're holding down the "`"-key, to send a
    SC029 & 1:: Send a

    1::
    ; press 1 in less than 300 ms after pressing the "`"-key, to send b
    If (A_PriorHotKey = "SC029 Up" AND A_TimeSincePriorHotkey < 300)
    {
        Send {BS}b
        return
    }
    ; otherwise:
    if 1_presses > 0
    {
        1_presses += 1
        SetTimer Key1, 300
        return
    }
    1_presses = 1
    SetTimer Key1, 300
    return

    Key1:
    SetTimer Key1, off
    if 1_presses = 2
      SendInput, BYE
    else
      SendInput, HELLOW
    1_presses = 0
    return

#If