[Gang]

I think it shpuld looks:

UO.Set('lasttarget','laststatus')
UO.WaitTargetObject('laststatus')

nope

you bind the macro in uo options then u use it via uo.press in injection so your damn targetnext macros should look like :

sub z()
uo.press(BindedKeyCode)
wait(100)
UO.Set('lasttarget','laststatus')
endsub

That is ALL. no need to waittargetobject or anything. If you cast spells by last target after using that subroutine everything should be ok