Cascading Max7219

I got a big Matrix LED : 32 x 16
Can I draw it use module MAX7219 ?

How to set the device count ?

SPI2.setup({mosi:B15, sck:B13});
var disp = require("MAX7219").connect(SPI2, B14, 8); //  8 seems not work

var g = Graphics.createArrayBuffer(32, 16, 1);
g.flip = function() { disp.raw(g.buffer); };

g.drawString("Hello!", 0, 0, 1);
g.flip();