WotLK Mouseover macro

[Hooba2]

#showtooltip
/cast [@mouseover, @target, @player] Healing Wave

Can you write correct simple macro for heal with priority mouseover >> target >> (no target or target enemy=player)
Now my macro heal only myself

[Kinniak]

/cast [@mouseover, harm, exists] Purge; Purge

[Hooba2]

not working

[Shred]

Granted this can probably be optimised, but it works

/cast [@mouseover, noharm, exists] Healing Wave
/cast [@target, noharm, exists] Healing Wave
/cast [@player] Healing Wave

[sinkopepicas]

#showtooltip Healing Wave
/cast [@mouseover,help,nodead] Healing Wave; [help,nodead] Healing Wave; [@player] Healing Wave

[CapsLockSK]

First you need to understand how mouseover works. In case of Healing wave, if you hovering above friendly unit and you have in target another friendly unit mouseover have priority. If you have friendly target but not hovering your mouse above friendly unit you will heal target and if you don't have target and don't hovering over friendly unit you heal yourself.
This is how all my healing/dispel macros looks like:

#showtooltip Healing Wave
/cast [@mouseover,exists][] Healing Wave