need some help with my WAC file please

[EZK_Cobra]

can somebody give me some help with my WAC file please?
all i want is to have 2 wave files play after each event is completed succesfully.

i've tried tried triggering it with groupdead, its a helicopter to be destroyed for the event which is Group 12 in DFXMED

if groupdead(12) and never() then
wave("macr152",200)
endif

if previous() and waveready() and never() then
wave("macr218",200)
endif

didnt work so i tried to do it by SSN

if ssndead(162) and never() then
wave("macr152",200)
endif

if previous() and waveready() and never() then
wave("macr218",200)
endif

still no go so i tried it by event

if event(22) and never() then
wave("macr152",200)
endif

if previous() and waveready() and never() then
wave("macr218",200)
endif

still nothing, the event works and i get the text message that the event was completed succesfully "Enemy Helipcopters Destroyed" but nothing from the WAC file.
the previous commands in the WAC file works just fine but all the other wave files are triggered by the "past" command.
This is the first that is to be triggered by an event and i would like to do this kind of thing after each event is finished.
Any ideas??
Thsnk You!