I've tried so many things, buuut

[NeuroToxin]

Ok, Im using

call ForGroup( GetUnitsInRectAll(GetPlayableMapRect()), function xyz )

and it wont work, function xyz IS a valid function, it tells me I have to declare a function

 

[AoW_Hun7312]

Are you sure you're declaring the function properly?

function MyFunction takes nothing returns nothing
endfunction

 

[Ashlebede]

Show us ze whole thing.

 

[NeuroToxin]

function c takes nothing returns nothing
        call ForGroup( GetUnitsInRectAll(GetPlayableMapRect()), function xyz )
endfunction

function xyz takes nothing returns nothing
    local location l
if ( GetUnitTypeId(GetEnumUnit()) == 'h000' ) then
    set l = GetUnitLoc(GetEnumUnit())
        call CreateItemLoc('I000', l)
    set l = null
endif
endfunction
//===========================================================================
function InitTrig_Periodic takes nothing returns nothing
    set gg_trg_Periodic = CreateTrigger(  )
    call TriggerRegisterTimerEventPeriodic( gg_trg_Periodic, 30.00 )
    call TriggerAddAction( gg_trg_Periodic, function c )
endfunction

 

[Ashlebede]

function xyz must be above function c.

 

[NeuroToxin]

oh, Thanks a bunch, +Rep

Edit: Gotta spread it :\