Insert value from payload

Whit parseInt

parseInt will take the first number in the payload and store it

var output = msg.payload.split(",");  // split value whit ,
var R = parseInt(output[0]); // store value 
var G = parseInt(output[1]);
var B = parseInt(output[2]);

msg.payload ={

"rgb": [R,G,B]  //create a msg array whit stored value

};

return msg;

Result

object

 

Whitout parseInt

var output = msg.payload.split(",");
var R = output[0];
var G = output[1];
var B = output[2];

msg.payload ={

"rgb": [R,G,B]

};

return msg;