function aa_useDomain(script,sc)
  if script~=nil and script=='TEST' then return '' end
  if LaunchMonoDataCollector()==0 then 
    return nil,"can't init mono data collector"
  end
  local targetIndex
  if script:lower()=='first' then targetIndex=1 
  elseif script:lower()=='last' then targetIndex=-1 
  elseif script:match("%[1-9]$") then targetIndex=tonumber(script) -- only for single digit number 1-9
  else
    targetIndex = -1 -- default
  end
  local eD = mono_enumDomains()
  if type(eD)~='table' or #eD<1 then
    return nil, "can't find any domain"
  end
  if type(targetIndex)~='number' or targetIndex < 1 or targetIndex>#eD then
    if targetIndex==-1 then 
      targetIndex = #eD 
    else
      return nil, "out of valid domain index(1-"..#eD..") :"..tostring(targetIndex)
    end
  end
  mono_setCurrentDomain(eD[targetIndex])
  return ''
end


if autoAssemble("useDomain(TEST)") then unregisterAutoAssemblerCommand("useDomain") end
registerAutoAssemblerCommand("useDomain",aa_useDomain)