Shaman macro! Need help

[Sokiane]

Hey im doing mouseover healing and trying to do:
Nature's Swiftness Tidal Force and then Healing Wave with mouse over macro so it only casting the Nature's Swiftness and Tidal Force if you got a player that is alive (ofc) in you mouseover target, i tried with:

[pre]#showtooltip TIdal Force
/cast [target=mouseover, exists, nodead, help, target=player] Nature's Swiftness
/cast [target=mouseover, exists, nodead, help, target=player] Tidal Force
/cast [@mouseover, help, nodead] Healing Wave
[/pre]

But it aint working, i hope some of you experienced player know a way to do it. and i use the #showtooltip TIdal Force becouse it have the longest cd within the 3 spells i use =)