Maxuino and ultrasonic sensor

Hi. Probably a fairly simple answer for this I'm hoping. I'm just very new to this and got deadlines coming up.

I'm trying to get an ultrasonic sensor working through Max/Msp. I have the standard firmata uploaded onto the board and the maxuino-005 test file running. I have the board selected in the serial port option and analog input 0 enabled (where the sensor is). Where is the data coming in?

A lecturer showed me before, with the input coming in a number box increasing or decreasing depending on the distance, but I can't for the life of me find it now.

Any help would be appreciated.