gistfile1.lua

-- First luascript (id 5)
function my_custom_function()
  local id1 = 5
  local id2 = 10
  local id3 = 20
  
  return id1, id2, id3
end


-- Second luascript
function init()
  my_lua = world:get_entity(5)
end

function step()
  local id1, id2, id3 = my_lua:call("my_custom_function")
  -- do what you wish with the id1, id2, id3
end