MAX7219 with Matrix Leds

Hello guys, I recently bought from ebay two Matrix Leds based on the Max7219, when I connect them to the espruino it powers everything up and then using the web IDE I send this code to the espruino:

SPI2.setup({mosi:B15, sck:B13});
var disp = require("MAX7219").connect(SPI2,B14);


setTimeout(function() {
  disp.raw([1,2,4,8,16,32,64,128]); // you can set the LEDs directly
}, 1000);

setTimeout(function() {
  var n = 0;
  setInterval(function() {
    disp.set(n++); // it can display integers
    disp.intensity(0.5+0.5*Math.sin(n*0.2)); // you set set intensity
  }, 100);
}, 2000);

But nothing happens, any idea?