Changing keybinds

[iNRage]

i want to change the keybind A (makes a and d spam) to Mouse5

How do i do this?

Code: (Not My Own Credit Goes To: Rohwedder)

Spoiler

$a:: ;Hotkey a
While, GetKeyState("a","P")
{
Send, {a Down}
Sleep, 1000
Send, {a Up}{d Down}
Sleep, 1000
Send, {d Up}
}
Return

This is what i changed it to but it doesnt work.

$Xbutton2:: ;Hotkey XButton2
While, GetKeyState("a","P")
{
Send, {a Down}
Sleep, 1000
Send, {a Up}{d Down}
Sleep, 1000
Send, {d Up}
}
Return
}
Return

[SkyLife]

While, GetKeyState("a","P")
↓
While, GetKeyState("Xbutton2","P")