killmarker not hitmarker [LUA]

local drawkilltime = 0
gameevent.Listen("entity_killed") --We want to listen to the event if any entities die.
hook.Add("entity_killed", "killmarker",function(data)
	local victim = Entity(data.entindex_killed)
	local attacker = Entity(data.entindex_attacker)
	if !IsValid(victim) || !IsValid(attacker) then return end --Always check if they entities are there.
	if attacker == LocalPlayer() && victim:IsPlayer() then 
		drawkilltime = CurTime()+1 --Draw the marker for 1 second
	end
end)

hook.Add("HUDPaint", "DrawKillmarker",function())
	if drawkilltime >= CurTime() then
		--Draw killmarker here
	end
end

        sound.PlayFile("killmarker.wav", "mono", function()

sound.PlayFile( "killmarker.wav", "", function( station )
	if ( IsValid( station ) ) then station:Play() end --Check if the sound exists and can play if not don't do anything.
end )

surface.PlaySound("killmarker.wav")