Is it ok to have two gateways?

@hek Thank you! I will try it as soon as I go home. Can you tell me what is the expected output from the gateway if I use static id 2 for a relayActuator that I turned on?

will it be just "2;1;1;0;2;1" or will "2;255;x;x;x;x" appear? only the read/send data is hidden

@hek can you please help me on what should I comment out?

Should I post my new question on another board?

Re: s there a way to receive only the last state of the sensors/actuators in the serial?

@Stric Removed it but still the read and send appears

I placed if statement in serial function inside MyGateway.cpp
where 0 is the gateway address

void MyGateway::serial(MyMessage &msg) {
  if (msg.sender != 0); serial(PSTR("%d;%d;%d;%d;%d;%s\n"),msg.sender, msg.sensor, mGetCommand(msg), mGetAck(msg), msg.type, msg.getString(convBuf));
}

Still it doesnt work.

Heres the format:

    msg.sender = GATEWAY_ADDRESS;
	msg.destination = destination;
	msg.sensor = sensor;
	msg.type = type;
	mSetCommand(msg,command);
	mSetRequestAck(msg,ack?1:0);
	mSetAck(msg,false);
	if (command == C_STREAM)
		msg.set(bvalue, blen);
	else
		msg.set(value);

Is there a way to receive only the last state of the sensors/actuators in the serial?

instead of:

0;0;3;0;9;read: 2-2-0 s=1,c=1,t=2,pt=2,l=2:1
0;0;3;0;9;send: 0-0-2-2 s=1,c=1,t=2,pt=2,l=2,st=ok:1
2;1;1;0;2;1

it only print the "2;1;1;0;2;1" on the serial

@rvendrame You know what. I'm really thankful for you help and I'm really sorry for dragging you with me. I can turn the light on now. I just have to print "2;1;1;1;2;0;" instead of "2;1;1;1;2;1".

I will check if I will encounter any problem because of my relay module.
Again, thank you so much for your help. And I'm really sorry.

@rvendrame My relay is more like this http://www.elecdesignworks.com/images/stories/virtuemart/product/img_62112.jpg

Thank you for your reference.
It has a transistor. I hope it's ok to use. I have tested it by following an instructable.