minetest.register_abm({
nodenames = "ubw:spawner",
interval = 3.0,
chance = 1,
action =

function(pos)
    ---[[
    savedpos = pos
    savedz = pos.z
    for i = 0, 25, 1  do
        pos.x = pos.x+1
        for p = 0, 25, 1 do
            pos.z = pos.z + 1
            minetest.set_node(pos, {name = "ubw:dirt_active"})
        end
        pos.z = savedz
    end
    --]]
    minetest.remove_node(savedpos)
end
})