excluding building from area selection

I have a couple of triggered spells that select all of the units around a hero within a certain radius.

Problem is, this trigger will select towers and such as well and apply the damage/effects to them.

Is there a way to have a unit group selection exclude buildings?

Isnt thre a function (units in range matching condition)? Then just set the condition to "matching unit is a building equal to false"

Yep, there is.