globals
    integer array handles
    integer count
    group tempGroup = CreateGroup()
    integer tempId
endglobals

function GHFilt takes nothing returns boolean
    if(GetUnitTypeId(GetFilterUnit())==tempId)then
        set count = count + 1
        set handles[count] = GetHandleId(GetFilterUnit())
    endif
    return false
endfunction

function GetHandlesOf takes integer id returns nothing
    set count = 0
    set tempId = id
    call GroupEnumUnitsInRect(tempGroup, bj_mapInitialPlayableArea, Filter(function GHFilt))
endfunction