Arduino into Max Noob! Question!

Hey Everyone.

Im very new to ardurino and cant find anyway to get a simple button to register using 'arduino2max'

Here's where im at;

I have a button wired up to digital pin 13, when i press the button the light on the arduino flashes.....Load up arduino with sketch/software thingy, set the arduino2max to 'usbmodem' and the arduino flashes........then i press the button hoping that in arduino2max digital input 13 will flash.......and it doesn't!!!!

*edit* i wired the button following these instructions,
http://danplows.com/blog/how-to-hook-up-a-button/ *edit*

If anyone can help or suggest a better way to get sensor data in max i would be very grateful

Much appreciated

Oli