spawners = {false, false}

function toggle(i)
if spawners[i] == true then spawners[i] = false
else spawners[i] = true
end

if spawners[0] == true then redstone.setOutput("top",true)
else redstone.setOutput("top", false)
end
if spawners[1] == true then redstone.setOutput("bottom", true)
else redstone.setOutput("bottom", false)
end
end

rednet.open("left")
while true do
senderId, message, distance = rednet.receive()
print("Message recieved: " ..message)
if message == "1" then
  toggle(1)
elseif message == "0" then
  toggle(0)
end
end