Simple Cycle Brightness

var entity = "light.living_room1";
var entity_group = "group.living_room";

var brightness = parseInt(global.get('homeassistant').homeAssistant.states[entity].attributes.brightness);

// Establish standard payload to be passed to service call node
msg.payload = {domain: "light", service: "turn_on",
    data: { entity_id: entity_group, }  };

if (brightness > 200) { new_brightness = 200 }
else if (brightness > 150) {new_brightness = 150 }
else if (brightness > 100) {new_brightness = 100 }
else if (brightness > 50) {new_brightness = 50 }
else {new_brightness = 255 }

node.status({text: "From: " + brightness + " To: " + new_brightness});
msg.payload.data.brightness = new_brightness.toString();

return msg;