[ic] Simple question about using [DISCOUNT]

[interchange-users@icdevgroup.org (interchange-users@icdevgroup.org)]

I want to offer my customers a ENTIRE_ORDER discount based on the total
number of items ordered, but I'm stuck on how to write the if statement.
What I've got looks something like this...

[if nitems > 25]
[discount ENTIRE_ORDER] $s * .85 [/discount]
[/if]

but this always returns 'true'. What am I doing wrong?