Can I use MQTT & Node Red to make this work, if yes can somebody show me how

Any support for MQTT gateway?

I am trying to get my relay actuator to work but no success.
I am using a mqtt gateway with a mqtt client when i publish to the topic MyMQTT/22/1/V_LIGHT payload ON the relay turn on but when i publish MyMQTT/22/1/V_LIGHT payload OFF the nothing happen.

I am trying to implement mqtt gateway but can not get to broadcast to the broker, i am using mini pro & W5100 Ethernet Module but if setup the gateway on a unio with a Ethernet shield it works ok.
What am i doing wrong.?