[ic] flat shipping based on quantity

[Mark]

Hi,

I need some help here.

I use flat shipping. For 1-5 items, the value is [var SHIP_FLAT_DOM_RATE].

For 6-9999 items, I have to do a formula. Basically, the first 5 items ship for
[var SHIP_FLAT_DOM_RATE], any additional item is $1.50. So, I tried using the
following formula:

[var SHIP_FLAT_DOM_RATE] + (($q-5) * 1.50)

This doesn't work. What should I be using for quantity ($q)? I am looking for
the total number of items in the cart.

Thanks!
Mark