Try this:
Code:
ClonesPush(strKeys)
{
	global WowWinId1
	global WowWinId2
	IfWinNotActive, ahk_id %WowWinId1%
		ControlSend, , %strKeys%, ahk_id %WowWinId1%
	IfWinNotActive, ahk_id %WowWinId2%
		ControlSend, , %strKeys%, ahk_id %WowWinId2%
}

WinGet, WowWinId, List, World of Warcraft

#IfWinActive, World of Warcraft

~^1::ClonesPush("{Ctrl down}{1 down}{1 up}{Ctrl up}")
~^2::ClonesPush("{Ctrl down}{2 down}{2 up}{Ctrl up}")
~^3::ClonesPush("{Ctrl down}{3 down}{3 up}{Ctrl up}")
~^4::ClonesPush("{Ctrl down}{4 down}{4 up}{Ctrl up}")
~^5::ClonesPush("{Ctrl down}{5 down}{5 up}{Ctrl up}")
~^6::ClonesPush("{Ctrl down}{6 down}{6 up}{Ctrl up}")
~^7::ClonesPush("{Ctrl down}{7 down}{7 up}{Ctrl up}")
~^8::ClonesPush("{Ctrl down}{8 down}{8 up}{Ctrl up}")
~^9::ClonesPush("{Ctrl down}{9 down}{9 up}{Ctrl up}")
~^0::ClonesPush("{Ctrl down}{0 down}{0 up}{Ctrl up}")