Timestamp for mqtt messages

[cmaxmedia]

Hi everyone, for a retained mqtt topic i can use %deviceName% or %roomName% as dynamic variables - is there a %timestamp% tag or any other way to publish the timestamp of the last on/off toggle?
cheers

[cmaxmedia]

I have implemented the following in /opt/z-way-server/automation/userModules/MQTT/index.js. Now the mqtt publishes a JSON with a timestamp and the value instead of string "on" or "off" only

//function added for leading zero
MQTT.prototype.trimString = function( txt, len ) {
  if( txt.toString().length==1 ) return "0" + txt.toString();
  return txt;
};

//updated function publish
MQTT.prototype.publish = function (topic, value, retained) {
  var self = this;

  if( self.client && self.client.connected) {
    var options = {};
    options.retain = retained;

    var dt = new Date();
    var dtString = dt.getFullYear() + "/" + self.trimString( dt.getMonth()+1, 2 ) + "/" + self.trimString( dt.getDate(), 2 );
    dtString += " " + self.trimString( dt.getHours(), 2 ) + ":" + self.trimString( dt.getMinutes(), 2 ) + ":" + self.trimString( dt.getSeconds(), 2 );

    var value_publish = '{"ts":"' + dtString + '","value":"' + value + '"}';

    self.client.publish( topic, value_publish.toString().trim(), options );
  }
};

cheers